Read HIPPARCOS components file.
Chris Laurel
parent
db71774f2d
commit
d5f8282a48
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@ -10,6 +10,7 @@
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#include <string>
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#include <vector>
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#include <map>
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#include <algorithm>
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#include <iostream>
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#include <fstream>
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#include <cstdio>
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@ -20,10 +21,11 @@ using namespace std;
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static string MainDatabaseFile("hip_main.dat");
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static string ComponentDatabase("h_dm_com.dat");
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static string ComponentDatabaseFile("h_dm_com.dat");
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static string OrbitalDatabase("hip_dm_o.dat");
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static const int HipStarRecordLength = 451;
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static const int HipComponentRecordLength = 239;
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static uint32 NullCCDMIdentifier = 0xffffffff;
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static uint32 NullCatalogNumber = 0xffffffff;
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@ -46,6 +48,7 @@ public:
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uint32 CCDMIdentifier;
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uint8 starsWithCCDM;
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uint8 nComponents;
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uint8 parallaxError;
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};
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@ -58,6 +61,7 @@ HipparcosStar::HipparcosStar() :
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appMag(0.0f),
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CCDMIdentifier(NullCCDMIdentifier),
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starsWithCCDM(0),
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nComponents(1),
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parallaxError(0)
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{
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}
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@ -81,6 +85,30 @@ void HipparcosStar::write(ostream& out)
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binwrite(out, parallaxError);
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}
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bool operator<(const HipparcosStar& a, const HipparcosStar& b)
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{
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return a.HIPCatalogNumber < b.HIPCatalogNumber;
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}
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struct HIPCatalogComparePredicate
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{
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HIPCatalogComparePredicate() : dummy(0)
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{
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}
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bool operator()(const HipparcosStar* star0, const HipparcosStar* star1) const
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{
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return star0->HIPCatalogNumber < star1->HIPCatalogNumber;
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}
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bool operator()(const HipparcosStar* star0, uint32 hip)
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{
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return star0->HIPCatalogNumber < hip;
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}
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int dummy;
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};
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class MultistarSystem
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{
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@ -90,12 +118,52 @@ public:
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};
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class HipparcosComponent
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{
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public:
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HipparcosComponent();
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HipparcosStar* star;
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float appMag;
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float bMag;
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float vMag;
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char componentID;
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bool hasBV;
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};
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HipparcosComponent::HipparcosComponent() :
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star(NULL),
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componentID('A'),
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hasBV(false)
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{
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}
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vector<HipparcosStar> stars;
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vector<HipparcosComponent> components;
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vector<HipparcosStar*> starIndex;
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typedef map<uint32, MultistarSystem*> MultistarSystemCatalog;
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MultistarSystemCatalog starSystems;
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HipparcosStar* findStar(uint32 hip)
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{
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HIPCatalogComparePredicate pred;
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vector<HipparcosStar*>::iterator iter = lower_bound(starIndex.begin(),
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starIndex.end(),
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hip, pred);
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if (iter == starIndex.end())
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return NULL;
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HipparcosStar* star = *iter;
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if (star->HIPCatalogNumber == hip)
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return star;
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else
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return NULL;
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}
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StellarClass ParseStellarClass(char *starType)
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{
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StellarClass::StarType type = StellarClass::NormalStar;
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@ -296,6 +364,8 @@ bool ReadStarRecord(istream& in)
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int n = 1;
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sscanf(buf + 340, "%d", &n);
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star.starsWithCCDM = (uint8) n;
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sscanf(buf + 343, "%d", &n);
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star.nComponents = (uint8) n;
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}
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float parallaxError = 0.0f;
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@ -307,13 +377,45 @@ bool ReadStarRecord(istream& in)
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star.parallaxError = (int8) (parallaxError / star.parallax * 200);
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}
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stars.insert(stars.end(), star);
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return true;
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}
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bool ReadComponentRecord(istream& in)
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{
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HipparcosComponent component;
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char buf[HipComponentRecordLength];
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in.read(buf, HipComponentRecordLength);
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uint32 hip;
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if (sscanf(buf + 42, "%ud", &hip) != 1)
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{
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cout << "Missing HIP catalog number for component.\n";
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return false;
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}
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component.star = findStar(hip);
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if (component.star == NULL)
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{
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cout << "Nonexistent HIP catalog number for component.\n";
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return false;
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}
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if (sscanf(buf + 40, "%c", &component.componentID) != 1)
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{
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cout << "Missing component identifier.\n";
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return false;
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}
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components.insert(components.end(), component);
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return true;
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};
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void BuildMultistarSystemCatalog()
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{
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for (vector<HipparcosStar>::iterator iter = stars.begin();
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@ -348,7 +450,7 @@ void BuildMultistarSystemCatalog()
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}
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void CorrectComponentParallaxes()
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void ConstrainComponentParallaxes()
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{
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for (MultistarSystemCatalog::iterator iter = starSystems.begin();
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iter != starSystems.end(); iter++)
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@ -359,6 +461,52 @@ void CorrectComponentParallaxes()
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for (int i = 1; i < multiSystem->nStars; i++)
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multiSystem->stars[i]->parallax = multiSystem->stars[0]->parallax;
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}
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if (multiSystem->nStars > 2)
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{
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cout << multiSystem->nStars << ": ";
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if (multiSystem->stars[0]->HDCatalogNumber != NullCatalogNumber)
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cout << "HD " << multiSystem->stars[0]->HDCatalogNumber;
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else
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cout << "HIP " << multiSystem->stars[0]->HIPCatalogNumber;
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cout << '\n';
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}
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}
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}
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void CorrectErrors()
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{
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for (vector<HipparcosStar>::iterator iter = stars.begin();
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iter != stars.end(); iter++)
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{
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// Fix the spectral class of Capella, listed for some reason
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// as M1 in the database.
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if (iter->HDCatalogNumber == 34029)
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{
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iter->stellarClass = StellarClass(StellarClass::NormalStar,
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StellarClass::Spectral_G, 0,
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StellarClass::Lum_III);
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}
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}
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}
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void ShowStarsWithComponents()
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{
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cout << "\nStars with >2 components\n";
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for (vector<HipparcosStar>::iterator iter = stars.begin();
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iter != stars.end(); iter++)
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{
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if (iter->nComponents > 2)
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{
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cout << (int) iter->nComponents << ": ";
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if (iter->HDCatalogNumber != NullCatalogNumber)
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cout << "HD " << iter->HDCatalogNumber;
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else
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cout << "HIP " << iter->HIPCatalogNumber;
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cout << '\n';
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}
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}
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}
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@ -367,32 +515,71 @@ int main(int argc, char* argv[])
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{
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assert(sizeof(StellarClass) == 2);
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ifstream mainDatabase(MainDatabaseFile.c_str(), ios::in | ios::binary);
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if (!mainDatabase.good())
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// Read star records from the primary HIPPARCOS catalog
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{
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cout << "Error opening " << MainDatabaseFile << '\n';
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exit(1);
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}
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ifstream mainDatabase(MainDatabaseFile.c_str(), ios::in | ios::binary);
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if (!mainDatabase.good())
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{
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cout << "Error opening " << MainDatabaseFile << '\n';
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exit(1);
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}
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cout << "Reading HIPPARCOS data set.\n";
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while (mainDatabase.good())
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{
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ReadStarRecord(mainDatabase);
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if (stars.size() % 10000 == 0)
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cout << stars.size() << " records.\n";
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cout << "Reading HIPPARCOS data set.\n";
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while (mainDatabase.good())
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{
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ReadStarRecord(mainDatabase);
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if (stars.size() % 10000 == 0)
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cout << stars.size() << " records.\n";
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}
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}
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cout << "Read " << stars.size() << " stars from main database.\n";
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cout << "Adding the Sun...\n";
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stars.insert(stars.end(), TheSun());
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cout << "Sorting stars...\n";
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{
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starIndex.reserve(stars.size());
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for (vector<HipparcosStar>::iterator iter = stars.begin();
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iter != stars.end(); iter++)
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{
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starIndex.insert(starIndex.end(), iter);
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}
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HIPCatalogComparePredicate pred;
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random_shuffle(starIndex.begin(), starIndex.end());
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sort(starIndex.begin(), starIndex.end(), pred);
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}
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// Read component records
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{
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ifstream componentDatabase(ComponentDatabaseFile.c_str(),
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ios::in | ios::binary);
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if (!componentDatabase.good())
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{
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cout << "Error opening " << ComponentDatabaseFile << '\n';
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exit(1);
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}
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cout << "Reading HIPPARCOS component database.\n";
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while (componentDatabase.good())
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{
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ReadComponentRecord(componentDatabase);
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}
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}
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cout << "Read " << components.size() << " components.\n";
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cout << "Building catalog of multiple star systems.\n";
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BuildMultistarSystemCatalog();
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int nMultipleSystems = starSystems.size();
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cout << "Stars in multiple star systems: " << nMultipleSystems << '\n';
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CorrectComponentParallaxes();
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ConstrainComponentParallaxes();
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CorrectErrors();
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// ShowStarsWithComponents();
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char* outputFile = "stars.dat";
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if (argc > 1)
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