discov_num |
notes |
refcode |
STF 93 |
alp Umi = 1 UMi = Polaris. Cepheid variable and spectroscopic binary, |
|
|
P = 30y. A close companion has been suspected. The close pair, |
|
|
measured three time from 1937-1939 by R.H. Wilson using an eyepiece |
WRH1941b |
|
interferometer, was not seen again until Evans et al. (2006) resolved |
Evs2006 |
|
it with HST. Wilson's measures agree with the combined astrometric/ |
|
|
spectroscopic solution by Gerasimovic (1936), although both orbit and |
Ger1936 |
|
measures are called into dispute by the more recent orbit of Wielan et |
Wln2000 |
|
al. (2000), whose solution includes mass estimates, etc. |
|
|
NPOI Limb-darkened diameter 3.28 +/- 0.02 mas, |
NOI1999 |
|
R = 46. +/- 3. \rsun. |
|
|
An earlier orbit by Wyller (1957) was rejected from Fourth Orbit |
Wye1957 |
|
Catalog ("amplitude below noise level") |
Wor1983 |
|
Component B = BD+88@@@7. See discussion of this system by Roemer. |
Re_1965 |
|
While Hipparcos parallax of A 7.56 +/- 0.48 from the original mission |
HIP1997a |
|
and 7.54 +/- 0.011 mas from the re-reduction, the HST-FGS parallax of |
VlF2007 |
|
B = 6.26 +/- 0.24 mas implies that that A is high luminosity and |
BdH2018 |
|
pulsating in the second overtone if AB is physical, i.e., the distance |
|
|
to B is the same as A. |
|
|
The C component was observed by Burnham in the late 19th century, then |
Bu_1894 |
|
not seen again until the early 21st century by Daley and Ashcroft. |
Dal2006a |
|
The extremely large magnitude makes the pair too close for most large |
|
|
astrometric surveys. |
|
|
The D component has also been recently recovered in 2MASS data. |
TMA2003 |
|
According to Jim Daley, the R-I color for C is 0.56 and for D it is |
|
|
0.67. The V-I color for D is 1.08. |
Dal2006b |
|
AB: H 4 1. |
MEv2010 |
refcode |
metd |
author |
reference |
BdH2018 |
not - |
Bond, H.E., Nelan, E.P., Evans, N.R., Schaefer, G.H. & Harmer, D. |
2018ApJ...853...55B |
BdH2018 |
|
ApJ 853, 55, 2018 |
|
Bu_1894 |
Ma j |
Burnham, S.W. |
1894PLicO...2....3B |
Bu_1894 |
|
Pub. Lick Obs. 2, 3, 1894 (includes most data from Bu_1893a) |
1893AN....131..329B |
Dal2006a |
C u |
Daley, J.A. |
2006JDSO....2...44D |
Dal2006a |
|
JDSO 2, 44, 2006 |
|
Dal2006b |
- |
Daley, J.A. |
2006JDSO....2...51D |
Dal2006b |
|
JDSO 2, 51, 2006 |
|
Evs2006 |
H j |
Evans, N.R., Franz, O., Massa, D., Mason, B., Walker, R.L., & Marovska, M. |
2006PASP..118.1545E |
Evs2006 |
+S |
PASP 118, 1545, 2006 |
|
Ger1936 |
orb - |
Gerasimovic, B.P. |
. |
Ger1936 |
|
Pulkova Obs. Circ. #19, 1, 1936 |
|
HIP1997a |
Hh - |
Hipparcos |
1997yCat.1239....0E |
HIP1997a |
|
Hipparcos Catalog, ESA SP-1200, 1997 (incl. Hp photometry, vol. 10) |
|
MEv2010 |
- |
MacEvoy, B. |
................... |
MEv2010 |
|
private communication, 2010 (see http://www.handprint.com/ASTRO/index.html) |
|
NOI1999 |
not j |
Nordgren, T.E., Germain, M.E., Benson, J.A., Mozurkewich, D., Sudol, J.J., Elias, |
1999AJ....118.3032N |
NOI1999 |
|
II, N.M., Hajian, A.R., White, N.M., Hutter, D.J., Johnston, K.J., Gauss, F.S., |
. |
NOI1999 |
|
Armstrong, J.T., Pauls, T.A. & Rickard, L.J. |
. |
NOI1999 |
|
AJ 118, 3032, 1999 |
. |
Re_1965 |
- |
Roemer, E. |
1965ApJ...141.1415R |
Re_1965 |
|
ApJ 141, 1415, 1965 |
|
TMA2003 |
E2 j |
2MASS Catalog |
. |
TMA2003 |
|
2MASS Point Src Cat., 2003 all-sky release (http://pegasus.phast.umass.edu/) |
|
TMA2003 |
|
(Note: 2MASS photometry also added by cataloguer to 2MASS astrometry published |
|
TMA2003 |
|
under other references.) |
|
TMA2003 |
|
Thurgood Marshall High School |
|
VlF2007 |
- |
van Leeuwen, F. |
2007A&A...474..653V |
VlF2007 |
|
A&A 474, 653, 2007 |
|
Wln2000 |
orb - |
Wielen, R., Jahreiss, H., Dettbarn, C., Lenhardt, H., & Schwan, H. |
2000A&A...360..399W |
Wln2000 |
|
A&A 360, 399, 2000 |
|
Wor1983 |
- |
Worley, C.E. & Heintz, W.D. |
1983PUSNO..24g...1W |
Wor1983 |
|
Pub. USNO 24, Pt. 7, 1983 (Fourth Orbit Catalog) |
|
WRH1941b |
J - |
Wilson, R.H. |
1941PFAO....6b...1W |
WRH1941b |
+Ma |
Pub. Univ. Penn. 6, Pt.4, 21, 1941 |
|
WRH1941b |
|
(U and T coded observations per van den Bos, J Obs 34, 85, 1951) |
1951JO.....34...85V |
Wye1957 |
orb - |
Wyller, A.A. |
1957AJ.....62..384W |
Wye1957 |
|
AJ 62, 384, 1957 |
|