Coord 2000 | 16312-2434 | Discov num | BOV 56 | Comp | AB | Coord arcsec 2000 | 16 31 15.78 -24 34 02.3 | ||||
Date first | 1954 | Date last | 2015 | Obs | 8 | ||||||
Pa first | 353 | Pa last | 352.8 | P.A. Now (θ) | 352.8° | ||||||
Sep first | 79.1 | Sep last | 79.061 | Sep. Now (ρ) | 79.061" | ||||||
Mag pri | 12.51 | Mag sec | 14.21 | delta mag (ΔM) | 1.7 | Spectral class | K7 (yellow-orange) | ||||
Pri motion ra | -005 | Sec motion ra | -006 | ||||||||
Pri motion dec | -016 | Sec motion dec | -014 | ||||||||
Notes | N (See Notes) |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 16 31 16 -24 34 02 | GHE 26 Aa,Ab | 2017 | 11 | 162 | 0.4 | 7.40 | 8.80 | 1.40 | ||||
Show | 16 31 16 -24 34 02 | BOV 56 AB | 2015 | 8 | 353 | 79.1 | 12.51 | 14.21 | 1.70 | <=== | |||
Show | 16 31 15 -24 32 44 | RAT 18 Ba,Bb | 2001 | 1 | 158 | 0.1 | 9.00 | 10.10 | 1.10 | ||||
Show | 16 31 15 -24 32 44 | RAT 18 BC | 2017 | 15 | 270 | 1.2 | 9.00 | 16.80 | 7.80 | ||||
Show | 16 31 15 -24 32 44 | CRE 1 BD | 2013 | 6 | 226 | 0.5 | 9.00 | 16.00 | 7.00 |
Constellation | Ophiuchus | Gaia DR2 | 6047587769819856640 |
discov_num | notes | refcode |
RAT 18 | BC: Initially added as 16313-2433 RAT 18AB, but the primary is also | |
the B component of 16312-2434 BOV 56. | ||
BC: Spectroscopy indicates the C component is a cool substellar object | ||
(M8-L0; Teff = 1800-2600K), not a background dwarf star, with spectral | ||
shape indicative of young, low surface gravity planet-mass companions. | ||
Currie et al. (2014) estimate the mass of the companion at 6-15 Mjup. | ||
They find some evidence of an additional companion at ~0.5" of roughly | ||
equal brightness, although preliminary analysis indicates it is a | ||
background object. | Cre2014 | |
BC: Primary is the T-Tauri type variable ROXs 42B. Kraus et al. (2014) | ||
estimate the mass of the companion at 10 +/- 4 Mjup. The D component | ||
is a background star. | KsA2014 |
refcode | metd | author | reference |
Cre2014 | Ci j | Currie, T., Daemgen, S., Debes, J., LaFreniere, D., Itoh, Y., Jayawardhana, R., | 2014ApJL..780L..30C |
Cre2014 | +A | Ratzka, T., & Correia, S. | |
Cre2014 | +Xr | ApJL 780, L30, 2014 | |
KsA2014 | A j | Kraus, A.L., Ireland, M.J., Cieza, L.A., Hinkley, S., Dupuy, T.J., | 2014ApJ...781...20K |
KsA2014 | Bowler, B.P., & Liu, M.C. | ||
KsA2014 | ApJ 781, 20, 2014 |
idgroup | discov | author |
1 | BOV | Bouvier, J. & Appenzeller, I. |
12 | GHE | Ghez, A.M., Neugebauer, G., Gorham, P.W., Haniff, C.A., Kulkarni, S.R., Matthews, |
12 | GHE | K., Koresko, C., & Beckwith, S. |
25 | GHE | Ghez, A.M., Duchene, G., Matthews, K., Hornstein, S.D., Tanner, A., Larkin, J., |
25 | GHE | Morris, M., Becklin, E.E., et al. |
26 | GHE | Ghez, A.M., Salim, S., Hornstein,S.D., Tanner, A., Lu, J.R., Morris, M., |
26 | GHE | Becklin, E.E., & Duchene, G. |
27 | GHE | Boehle, A., Ghez, A.M., Schodel, R., Meyer, L., Yelda, S., Albers, S., |
27 | GHE | Martinez, G.D., Becklin, E.E., Do, T., Lu, J.R., Matthews, K., Morris, M., et al. |
28 | RAT | Ratzka, Th., Koehler, R., & Leinert, Ch. |
29 | RAT | Ratzka, Th., Schegerar, A.A., Leinert, Ch., Abraham, P., Henning, Th., |
29 | RAT | Herbst, T.M., Koehler, R., Wolf, S., & Zinnecker, H. |
coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
16312-2434 | BOV 56 | AB | 2000 | 2 | 353 | 79.2 | 11.30 | 13.50 | K7 | D | 163115.78-243402.3 |
16312-2434 | BOV 56 | AB | 2010 | 7 | 353 | 79.1 | 12.51 | 14.21 | K7 | 163115.78-243402.3 | |
16312-2434 | BOV 56 | AB | 2015 | 8 | 353 | 79.1 | 12.51 | 14.21 | K7 | N | 163115.78-243402.3 |
Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation. |
Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation. |
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A | Ab | B | Bb | C | |
Ab | pa=163.2° sep=0.36" | ||||
B | pa=352.5° sep=79.28" | pa=352.4° sep=79.63" | |||
Bb | pa=352.5° sep=79.20" | pa=352.5° sep=79.55" | pa=159.7° sep=0.08" | ||
C | pa=351.7° sep=79.43" | pa=351.7° sep=79.79" | pa=270.2° sep=1.07" | pa=274.2° sep=1.10" | |
D | pa=352.2° sep=78.96" | pa=352.2° sep=79.31" | pa=223.2° sep=0.52" | pa=231.9° sep=0.48" | pa=118.0° sep=0.81" |
Coord arcsec 2000 | 163115.78-243402.3 | Mag | 12.51 | Spectral class | K7 (yellow-orange) | PmRA | -5.00 | ||||
PmDE | -16.0 |
Coord arcsec 2000 | 163115.79-243402.6 | Mag | 8.8 | Calc delta mag | 1.4 | Calc coord | yes |
Coord arcsec 2000 | 163115.02-243243.7 | Coord calc | 163115.02-243243.7 | Mag | 9 | Spectral class | M0 (red) | ||||
PmRA | -8.00 | PmDE | -18.0 | Calc delta mag | 1.6 |
Coord arcsec 2000 | 163115.02-243243.8 | Mag | 10.1 | Calc delta mag | 2.7 | Calc coord | yes |
Coord arcsec 2000 | 163114.94-243243.7 | Mag | 16.8 | Spectral class | M9 (red) | Calc delta mag | 9.4 | ||||
Calc coord | yes |
Coord arcsec 2000 | 163114.99-243244.1 | Mag | 16 | Calc delta mag | 8.6 | Calc coord | yes |