| Column | Value | | Explain (UCD) |
| _RAJ2000 | 11 57 35.6 | "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 | +55 27 39 | "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 | 11 55 00.2 | "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 | +55 44 21 | "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 | 138.2549 | 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 | +60.0366 | 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) |
| 4130recno | 4130 | | Record number assigned by the VizieR team. Should Not be used for identification. (meta.record) (RECORD) |
|
| NGC | 3990 | | [1/7840] The original NGC number (meta.id;meta.main) (ID_MAIN) |
| m_NGC | | | Component of NGC (Note 6)
(meta.code.multip) (CODE_MULT_INDEX) |
| Type | 5 | | Type of object (Note 1)
(src.class) (CLASS_OBJECT) |
| RA1975 | 11 56.3 | "h:m:s" | (i) Right Ascension (1975) (pos.eq.ra;meta.main) (POS_EQ_RA_MAIN) |
| DE1975 | +55 36 | "d:m:s" | (i) Declination (1975) (pos.eq.dec;meta.main) (POS_EQ_DEC_MAIN) |
| Xpos | 260 | mm | Position eastwards on POSS blue print (pos.cartesian.x;instr.plate) (POS_PLATE_X) |
| Ypos | 297 | mm | Position northwards on POSS blue print (pos.cartesian.y;instr.plate) (POS_PLATE_Y) |
| Mag | 13.5 | mag | Magnitude rounded to the nearest half magnitude (phot.mag) (PHOT_MAG_UNDEF) |
| r_Mag | 2 | | Source of Magnitude (Note 2)
(meta.ref) (REFER_CODE) |
| OldDesc | PF,S,LE,PSLBM | | Visual appearance of object transcribed from Dreyer J.L.E. (1888) (Note 3)
(src.morph.type) (MORPH_TYPE) |
| NewDesc | LEL,BM | | Palomar Sky Survey Description of each object (Note 4)
(meta.note) (NOTE) |
| Notes | *,Z*,V*,HO310B | | Cross References for RNGC objects (Note 5)
(meta.note) (NOTE) |
|
| _RA.icrs | 11 57.6 | "h:m:s" | (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra) (POS_EQ_RA_OTHER) |
| _DE.icrs | +55 28 | "d:m:s" | (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec) (POS_EQ_DEC_OTHER) |
