Column | Value | | Explain (UCD) |
_RAJ2000 | 08 40 48 | "h:m:s" | Right ascension (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra) (POS_EQ_RA) |
_DEJ2000 | +19 36.0 | "d:m:s" | Declination (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec) (POS_EQ_DEC) |
_RAB1950 | 08 37 56 | "h:m:s" | Right ascension (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra) (POS_EQ_RA) |
_DEB1950 | +19 46.7 | "d:m:s" | Declination (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec) (POS_EQ_DEC) |
_Glon | 206.032 | deg | Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon) (POS_GAL_LON) |
_Glat | +32.550 | deg | Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat) (POS_GAL_LAT) |
5recno | 5 | | Record number assigned by the VizieR team. Should Not be used for identification. (meta.record) (RECORD) |
|
t2 | e | | [a-j] indicates which table2 lists the stars (meta.ref) (DATA_LINK) |
Name | Praesepe | | Name of cluster or association (Note)
(meta.id;meta.main) (ID_MAIN) |
Nacc | 24 | | Number of stars accepted in the solution (meta.number) (NUMBER) |
Nrej | 0 | | Number of stars rejected in the solution (meta.number) (NUMBER) |
v0x | -1.46 | km/s | Space velocity component on equatorial X axis (Note)
(phys.veloc) (VELOC_SPACE_X) |
e_v0x | 9.03 | km/s | Standard error in v0x (Note)
(stat.error) (ERROR) |
v0y | 48.14 | km/s | Space velocity component on equatorial Y axis (Note)
(phys.veloc) (VELOC_SPACE_Y) |
e_v0y | 10.87 | km/s | Standard error in v0y (Note)
(stat.error) (ERROR) |
v0z | 2.00 | km/s | Space velocity component on equatorial Z axis (Note)
(phys.veloc) (VELOC_SPACE_Z) |
e_v0z | 5.02 | km/s | Standard error in v0z (Note)
(stat.error) (ERROR) |
sigv | 0.67 | km/s | Internal velocity dispersion (Note)
(phys.veloc.dispersion) (VELOC_DISP) |
e_sigv | 0.23 | km/s | Standard error of sigv (Note)
(stat.error) (ERROR) |
RAJ2000 | 130.2 | deg | (i) Right ascension (J2000) of cluster centroid (Note)
(pos.eq.ra;meta.main) (POS_EQ_RA_MAIN) |
DEJ2000 | +19.6 | deg | (i) Declination (J2000) of cluster centroid (Note)
(pos.eq.dec;meta.main) (POS_EQ_DEC_MAIN) |
v0r | 36.20 | km/s | Astrometric radial velocity of centroid (Note)
(phys.veloc;pos.heliocentric) (VELOC_HC) |
e_v0r | 14.95 | km/s | Standard error of v0r (Note)
(stat.error) (ERROR) |
cxx | 81.5144 | km2/s2 | Covariance of (v0x,v0x) (Note)
(stat.correlation) (STAT_CORRELATION) |
cxy | -96.9043 | km2/s2 | Covariance of (v0x,v0y) (Note)
(stat.correlation) (STAT_CORRELATION) |
cxz | -45.2927 | km2/s2 | Covariance of (v0x,v0z) (Note)
(stat.correlation) (STAT_CORRELATION) |
cyy | 118.2130 | km2/s2 | Covariance of (v0y,v0y) (Note)
(stat.correlation) (STAT_CORRELATION) |
cyz | 53.9478 | km2/s2 | Covariance of (v0y,v0z) (Note)
(stat.correlation) (STAT_CORRELATION) |
czz | 25.2001 | km2/s2 | Covariance of (v0z,v0z) (Note)
(stat.correlation) (STAT_CORRELATION) |
RAcdeg | 91.74 | deg | Right ascension (J2000) of convergence point (Note)
(pos.eq.ra) (POS_EQ_RA_OTHER) |
e_RAcdeg | 10.34 | deg | Standard error of RAc, times cos(DEc) (Note)
(stat.error) (ERROR) |
DEcdeg | 2.38 | deg | Declination (J2000) of convergence point (Note)
(pos.eq.dec) (POS_EQ_DEC_OTHER) |
e_DEcdeg | 5.42 | deg | Standard error of DEc (Note)
(stat.error) (ERROR) |
v0 | 48.20 | km/s | Total space velocity (Note)
(phys.veloc;pos.heliocentric) (VELOC_HC) |
e_v0 | 11.33 | km/s | Standard error of v0 (Note)
(stat.error) (ERROR) |