08250-4246 RST 4888 AB (V438 Pup)
08h 24m 57.22s -42° 46' 11.5" P.A. 102.00 sep 0.5 mag 6.59,6.81 Sp B3V dist. 549.45 pc (1792.31 l.y.)
Coord 2000 |
08250-4246 |
|
Discov num |
RST4888 |
|
Comp |
AB |
|
Coord arcsec 2000 |
08 24 57.22 -42 46 11.5 |
|
Date first |
1942 |
|
Date last |
2020 |
|
Obs |
27 |
|
Pa first |
136 |
|
Pa last |
101.5 |
|
P.A. Now (θ) |
101.5° |
|
Sep first |
0.4 |
|
Sep last |
0.524 |
|
Sep. Now (ρ) |
0.524" |
|
Mag pri |
6.59 |
|
Mag sec |
6.81 |
|
delta mag (ΔM) |
0.22 |
|
Spectral class |
B3V (blue-white) |
|
Pri motion ra |
-010 |
|
Sec motion ra |
-010 |
|
Pri motion dec |
+005 |
|
Sec motion dec |
+005 |
|
Notes |
N
(See Notes) |
|
Nature of this double is uncertain.
08250-4246 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
V438 Pup |
219890 |
08 24 57 -42 46 12 |
RST 4888 AB |
2020 |
27 |
102 |
0.5 |
6.59 |
6.81 |
0.22 |
|
<=== |
Show |
|
219890 |
08 24 57 -42 46 12 |
CHR 226 Ba,Bb |
2020 |
13 |
103 |
0.0 |
7.00 |
8.10 |
1.10 |
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Var name |
V438 Pup |
|
Constellation |
Puppis |
|
SAO |
219890 |
|
HIP |
41250 |
|
Tycho2 |
7669-03731-1 |
|
HD |
71302 |
|
HR |
3322 |
|
GC |
11504 |
|
CD |
CD-42 4219 |
|
CP |
CP-42 2455 |
|
Distance |
549.45 |
|
Distance ly |
1792.31 |
|
WDS 08250-4246 RST 4888 AB (V438 Pup) : NOTES
discov_num |
notes |
refcode |
CHR 226 |
Ba,Bb: This close companion to RST4888 has been observed on three |
|
|
occasions, but has shown little movement over a 1.6-year period. The |
|
|
1989 measurements of the Rossiter pair were originally published by |
|
|
McAlister et al. (1990) and Hartkopf et al. (1993). Following |
McA1990 |
|
discovery of the close pair in the 1990 data, these 1989 data were |
Hrt1993 |
|
rereduced, resulting in "preconfirmation" of the new component. |
Hrt1996b |
|
V438 Pup, Algol-type eclipsing binary, P = 4.9350 d. |
Zas2011 |
|
The new pair was initially given component designations Aa,Ab, but |
|
|
it was uncertain which component of the Rossiter had been split. |
|
|
Tokovinin et al. (2015) have determined it was the B component, so the |
Tok2015c |
|
pair has been changed to Ba,Bb. |
|
REFERENCES
refcode |
metd |
author |
reference |
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 |
|
Hrt1996b |
Sc j |
Hartkopf, W.I., Mason, B.D., McAlister, H.A., Turner, N.H., Barry, D.J., Franz, . |
1996AJ....111..936H |
Hrt1996b |
|
O.G., & Prieto, C.M |
|
Hrt1996b |
|
AJ 111, 936, 1996 |
|
McA1990 |
Sc j |
McAlister, H.A., Hartkopf, & Franz, O.G. |
1990AJ.....99..965M |
McA1990 |
|
AJ 99, 965, 1990 |
|
Tok2015c |
orb+j |
Tokovinin, A., Mason, B.D., Hartkopf, W.I., Mendez, R.A., & Horch, E.P. |
2015AJ....150...50T |
Tok2015c |
+St |
AJ 150, 50, 2015 (some measures corrected in Tok2017b) |
2017AJ....154..110T |
Zas2011 |
- |
Zasche, P. |
................... |
Zas2011 |
|
private communication, 2011 |
|
DISCOVERER
idgroup |
discov |
author |
1 |
CHR |
Center for High Ang. Res. Astronomy (speckle interferometry systems) |
3 |
RST |
Rossiter, R.A. |
WDS HISTORIC DATA
coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
08250-4246 |
RST4888 |
AB |
2006 |
8 |
105 |
0.5 |
6.59 |
6.81 |
|
D |
082457.22-424611.5 |
08250-4246 |
RST4888 |
AB |
2009 |
10 |
104 |
0.5 |
6.59 |
6.81 |
|
D |
082457.22-424611.5 |
08250-4246 |
RST4888 |
AB |
2010 |
11 |
105 |
0.5 |
6.59 |
6.81 |
|
N D |
082457.22-424611.5 |
08250-4246 |
RST4888 |
AB |
2011 |
13 |
104 |
0.5 |
6.59 |
6.81 |
|
N D |
082457.22-424611.5 |
08250-4246 |
RST4888 |
AB |
2012 |
14 |
103 |
0.5 |
6.59 |
6.81 |
B3V |
N |
082457.22-424611.5 |
08250-4246 |
RST4888 |
AB |
2014 |
16 |
102 |
0.5 |
6.59 |
6.81 |
B3V |
N |
082457.22-424611.5 |
08250-4246 |
RST4888 |
AB |
2015 |
18 |
103 |
0.5 |
6.59 |
6.81 |
B3V |
N |
082457.22-424611.5 |
08250-4246 |
RST4888 |
AB |
2017 |
20 |
103 |
0.5 |
6.59 |
6.81 |
B3V |
N |
082457.22-424611.5 |
08250-4246 |
RST4888 |
AB |
2018 |
23 |
102 |
0.5 |
6.59 |
6.81 |
B3V |
N |
082457.22-424611.5 |
08250-4246 |
RST4888 |
AB |
2019 |
26 |
102 |
0.5 |
6.59 |
6.81 |
B3V |
N |
082457.22-424611.5 |
08250-4246 |
RST4888 |
AB |
2020 |
27 |
102 |
0.5 |
6.59 |
6.81 |
B3V |
N |
082457.22-424611.5 |
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WDS 08250-4246 RST 4888 AB (V438 Pup) : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 08250-4246 RST 4888 AB (V438 Pup) : MEASURES
No records found.
WDS 08250-4246 (V438 Pup) : VIRTUAL EYEPIECE
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WDS 08250-4246 (V438 Pup) : ALADIN DSS IMAGE @
Error -22130
Not valid ID.
Error -22130
Not valid ID.
Error -27220
Not valid ID.