| I/325/icrf-u2 | Radio-optical reference frame link (Zacharias+ 2013) Results from UCAC2-type reductions of ICRF optical counterparts (sample in table 4 of paper) (666 rows) | recno=31 |
| Column | Value | Explain (UCD) | |
| _RAJ2000 | 01 21 56.861800 | "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) |
| _DEJ2000 | +04 22 24.72600 | "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) |
| _RAB1950 | 01 19 21.389738 | "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) |
| _DEB1950 | +04 06 44.09426 | "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) |
| _Glon | 137.250597516 | 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) |
| _Glat | -57.647543677 | 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) |
| 31recno | 31 | Record number assigned by the VizieR team. Should Not be used for identification. (meta.record) | |
| RAJ2000 | 01 21 56.8618 | "h:m:s" | (i) Right Ascension ICRS (pos.eq.ra;meta.main) |
| DEJ2000 | +04 22 24.726 | "d:m:s" | (i) Declination ICRS (pos.eq.dec;meta.main) |
| Dist | 8.1 | mas | [0/1821] Distance between the optical and radio positions (pos.angDistance) |
| dRA* | 1.3 | mas | Distance(optical-radio) in RA*cos(Dec) (pos.eq.ra;arith.diff) |
| dDec | -8.0 | mas | Distance(optical-radio) in Dec (pos.eq.dec) |
| eRA | 57 | mas | [4/250] total, formal error of optical position (RA*cos(Dec)) (stat.error;spect.dopplerVeloc.opt;em.opt) |
| eDE | 57 | mas | [4/250] total, formal error of optical position (Dec) (stat.error;spect.dopplerVeloc.opt;em.opt) |
| sRA | 0.0 | ratio dRA*/eRA (position difference in RA in σs) (stat.fit.goodness) | |
| sDE | -0.1 | ratio dDE/eDE (position difference in Dec in σs) (stat.fit.goodness) | |
| eRad | 0.0 | mas | error of radio position (per coordinate) (stat.error;spect.dopplerVeloc.radio;em.radio) |
| Nccd | 3 | number of deep CCD exposures used (meta.number) | |
| Nr* | 22 | average number of reference stars per deep exposure used (meta.number) | |
| Nrx | 0 | average number of reference stars excluded (meta.number) | |
| err | 18.2 | mean "plate" solution error of individual deep CCD exposures (stat.error) | |
| S/N | 7 | [1/1639] Approximate signal/noise ratio of target on individual deep CCD (stat.snr;instr.det) | |
| mag | 19.50 | mag | Optical brightness from LQAC-2 (J/A+A/537/A99) (phot.mag;em.opt) |
| z | 0.637 | [0/5] Redshift from LQAC-2 (J/A+A/537/A99) (src.redshift) | |
| T | 3 | [0/3] Object type: 0=unknown, 1=AGN, 2=BL-Lac, 3=QSO (from Veron's 13th ed. (VII/258) (src.class) | |
| S | 2.90 | [0.8/7.2] Radio X-band (8-12GHz) structure index from Bordeaux database: 1=very good, 2=good, 3=use with caution, 4=unacceptable (meta.code.qual) | |
| U | 2 | [2/4] UCAC-type reductions (2 or 4) (meta.id;meta.dataset) | |
| Rname | 0119+041 | B1950 coordinate based name of target (meta.id;meta.main) | |
| R | 2 | Number of results for this source with UCAC2- and UCAC4-type reductions (meta.number) | |
| Run | z | [abo-zJ] Code of deep CCD observing run (Note 1) (meta.code;instr.det) | |
| n_Run | r | [rc] Type of target: r=regular target, c=also used as calibration field (meta.note) | |
| Q | g | [ufplgn] Quality letter of optical image (Note 2) (meta.code.qual;spect.dopplerVeloc.opt;em.opt) | |
| M | 2 | Existence in Vérons' catalogue (VII/258) and/or LQAC-2 (J/A+A/537/A99) within 3arcsec (meta.ref.url) | |
| Notes | Remarks; if a double the separation (pixel) and flux ratio (source/companion) is given (meta.number) | ||
| SimbadName | QSO B0119+041 | Designation understandable by the Simbad data-base (meta.id) | |
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