20314+2054 J 844
20h 30m 50.69s +20° 53' 41.6" P.A. 117.00 sep 4.0 mag 11.90,12.80
| Coord 2000 | 20314+2054 | Discov num | J 844 | Comp | Coord arcsec 2000 | 20 30 50.69 +20 53 41.6 | |||||
| Date first | 1930 | Date last | 2016 | Obs | 11 | ||||||
| Pa first | 121 | Pa last | 117.4 | P.A. Now (θ) | 117.4° | ||||||
| Sep first | 2.3 | Sep last | 4.042 | Sep. Now (ρ) | 4.042" | ||||||
| Mag pri | 11.90 | Mag sec | 12.80 | delta mag (ΔM) | 0.9 | Spectral class | |||||
| Pri motion ra | -012 | Sec motion ra | +000 | ||||||||
| Pri motion dec | +000 | Sec motion dec | -001 | ||||||||
| Notes | N (See Notes) | ||||||||||
OTHER CATALOGS AND DESIGNATIONS
| Constellation | Delphinus | Gaia DR2 | 1816844524255912832 |
WDS 20314+2054 J 844 : NOTES
| discov_num | notes | refcode |
| J 844 | Heintz says GCB 54 and J 844 are identical, with erroneous position | Hei1983a |
| and angle by Jonckheere. Designation J 844 retained, based on earlier | ||
| discovery. | ||
| Same as GCB 57. | Dam2013 |
REFERENCES
| refcode | metd | author | reference |
| Dam2013 | Es j | Damm, F. | ................... |
| Dam2013 | private communication, 2013 | ||
| Hei1983a | M+ j | Heintz, W.D. | 1983ApJS...51..249H |
| Hei1983a | +Po | ApJS 51, 249, 1983 |
DISCOVERER
| idgroup | discov | author |
| 1 | J | Jonckheere, R. |
WDS HISTORIC DATA
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 20314+2054 | J 844 | 1980 | 4 | 120 | 3.5 | 12.20 | 12.80 | N I | 203134.23+205120.4 | ||
| 20314+2054 | J 844 | 2000 | 6 | 118 | 4.0 | 12.20 | 12.80 | N | 203050.69+205341.6 | ||
| 20314+2054 | J 844 | 2001 | 7 | 116 | 4.0 | 12.20 | 12.80 | N | 203050.69+205341.6 | ||
| 20314+2054 | J 844 | 2011 | 7 | 118 | 4.1 | 12.20 | 12.80 | N | 203050.69+205341.6 | ||
| 20314+2054 | J 844 | 2012 | 9 | 117 | 4.0 | 12.20 | 12.80 | N | 203050.69+205341.6 | ||
| 20314+2054 | J 844 | 2013 | 10 | 117 | 4.0 | 11.90 | 12.80 | N | 203050.69+205341.6 | ||
| 20314+2054 | J 844 | 2015 | 12 | 117 | 4.0 | 11.90 | 12.80 | N | 203050.69+205341.6 | ||
| 20314+2054 | J 844 | 2016 | 11 | 117 | 4.0 | 11.90 | 12.80 | N | 203050.69+205341.6 |
If you need more information about this double, apply for a data request form to the WDS.
WDS 20314+2054 J 844 : VISUAL OBSERVATIONS REPORTS
WDS 20314+2054 J 844 : MEASURES
WDS 20314+2054 : VIRTUAL EYEPIECE
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WDS 20314+2054 : ALADIN DSS IMAGE @
Error -22130
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