| discov_num |
notes |
refcode |
| HU 620 |
The binary companion B discovered by S.W. Burnham in 1878 moved since |
Bu_1879 |
|
then by +6deg in angle, now at 0.63" separation. Considering this |
|
|
slow motion, the pair is likely much wider than it seems, being seen |
|
|
in projection. The sub-system CHR 50 Aa,Ab was discovered by speckle |
|
|
interferometry in 1983.42 at 0.20" (McAlister et al. 1987). A total of |
Mca1987b |
|
four measures are listed, the last one in 2006.19. Curiously, the wide |
Msn2009 |
|
pair AB was measured with speckle at 4-m telescopes several times (in |
|
|
1985.50, 1989.31, 1991.39) without resolving the sub-system. We |
Mca1990 |
|
measured the AB and found no trace of CHR 50 in three runs at SOAR in |
Hrt1993 |
|
2009-2012. The separation of CHR 50 implies an orbital period of 50 |
Tok2012b |
|
yr. Yet the few speckle resolutions show a fast motion or a random |
|
|
scatter. If the sub-system CHR 50 were real, we would expect it to |
|
|
cause some wobble in the motion of AB, but no such signal is seen. |
Tok2012b |
| CHR 50 |
The measures show a large scatter and there are many observations of |
Tok2010b |
|
the wider AB without a measure of this close companion. The nature of |
|
|
the motion or even the reality of this pair is in question. A "ghost". |
|
| refcode |
metd |
author |
reference |
| Bu_1879 |
Ma j |
Burnham, S.W. |
1879MmRAS..44..141B |
| Bu_1879 |
|
MemRAS 44, 141, 1879 |
|
| Hrt1993 |
Sc j |
Hartkopf, W.I., Mason, B.D., Barry, D.J., McAlister, H.A., Bagnuolo, W.G., & |
1993AJ....106..352H |
| Hrt1993 |
|
Prieto, C.M. |
|
| Hrt1993 |
|
AJ 106, 352, 1993 |
|
| McA1987b |
Sc j |
McAlister, H.A., Hartkopf, W.I., Hutter, D.J., & Franz, O.G. |
1987AJ.....93..688M |
| McA1987b |
|
AJ 93, 688, 1987 |
|
| McA1990 |
Sc j |
McAlister, H.A., Hartkopf, & Franz, O.G. |
1990AJ.....99..965M |
| McA1990 |
|
AJ 99, 965, 1990 |
|
| Msn2009 |
S+ j |
Mason, B.D., Hartkopf, W.I., Gies, D.R., Henry, T.J., & Helsel, J.W. |
2009AJ....137.3358M |
| Msn2009 |
+orb |
AJ 137, 3358, 2009 |
|
| Msn2009 |
+lin |
|
|
| Tok2010b |
S - |
Tokovinin, A. |
................... |
| Tok2010b |
|
private communication |
|
| Tok2012b |
S j |
Tokovinin, A. |
2012AJ....144...56T |
| Tok2012b |
+orb |
AJ 144, 56, 2012 |
|
| Tok2021c |
orb - |
Tokovinin, A. |
2021IAUDS.203....1S |
| Tok2021c |
|
Inf. Circ. 203, 1, 2021 |
|
| idgroup |
discov |
author |
| 1 |
BU |
Burnham, S.W. (BU 1 - 81) |
| 179 |
CHR |
Center for High Ang. Res. Astronomy (speckle interferometry systems) |
| 181 |
HJ |
Herschel, J.F.W. |
| 230 |
KOH |
Koehler, R. & Leinert, Ch. |
| 240 |
KOH |
Koehler, R., Petr-Gotzens, M.G., McCaughrean, M.J., Bouvier, J., Duchene, G., |
| 240 |
KOH |
Quirrenbach, A., & Zinnecker, H. |
