10443-7052 DUN 99 AC

 
 
10h 44m 20.10s -70° 51' 35.0" P.A. 45.00 sep 42.6 mag 6.26,9.75 Sp A5IV-V dist. 103.41 pc (337.32 l.y.)
 
 
Coord 2000 10443-7052 Discov num DUN  99 Comp AC Coord arcsec 2000 10 44 20.10 -70 51 35.0
Date first 1835 Date last 2015 Obs 11
Pa first 39 Pa last 44.8 P.A. Now (θ) 44.8°
Sep first 35.0 Sep last 42.648 Sep. Now (ρ) 42.648"
Mag pri 6.26 Mag sec 9.75 delta mag (ΔM) 3.49 Spectral class A5IV-V (white)
Pri motion ra -046 Sec motion ra -012
Pri motion dec +001 Sec motion dec +015
Notes N (See Notes)
rPM=0.799
Nature of this double is uncertain.
 
 
10443-7052 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 93344 256750 10 44 20 -70 51 35 DUN 99 AB 2015 20 75 62.6 6.26 6.47 0.21
Show 256750 10 44 20 -70 51 35 DUN 99 AC 2015 11 45 42.6 6.26 9.75 3.49 <===
Show 256751 10 44 32 -70 51 19 CHR 227 Ba,Bb 1996 3 48 0.6 6.42 8.99 2.57
Show 256751 10 44 32 -70 51 19 DUN 99 BC 2015 10 295 33.6 6.47 9.75 3.28
Quadruple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Carina SAO 256750 HIP 52520 Tycho2 9215-03042-1
Gaia DR2 5231271579581900800 HD 93344 HR 4211 CP CP-70 1183
Distance 103.41 Distance ly 337.32
 
 
WDS 10443-7052 DUN 99 AC : NOTES
 
 
discov_num notes refcode
DUN 99 B is CPD-70@1185, spectrum A6IV.
CHR 227 Ba. Worley (private communication) noted that the systematic binary
star surveys of Rossiter (1955) and van den Bos missed the Rst1955
declination band -73 to -70 deg. This probably explains why this
half-arcsecond pair remained undiscovered until now. CHR 227
represents a new component to the wide (63") common proper motion pair
HR 4211-12 = DUN 99 AB, discovered by J. Dunlap in 1826 (1829) and Dun1829
last observed nearly 80 years ago (Dawson 1918). A 10th magnitude C Daw1918a
component also lies some 35" from A, discovered by John Herschel in HJ_1847a
1835, but no closer components are known. Hrt1996b
 
 
REFERENCES
 
 
refcode metd author reference
Daw1918a Ma - Dawson, B.H. .
Daw1918a Pub. La Plata Obs. 4, Pt.1, 1918
Dun1829 Ma - Dunlop, J. 1829MmRAS...3..257D
Dun1829 MemRAS 3, 257, 1829
Dun1829 some measures corrected in LRR2022
HJ_1847a Ma j Herschel, J.F.W. .
HJ_1847a +Mb Cape Results, London, 1847 (Cape of Good Hope Astronomical Observations 1834-1838)
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
Rst1955 Ma j Rossiter, R.A. 1955POMic..11....1R
Rst1955 +P+ Pub. Univ. Michigan Obs. 11, 1, 1955
 
 
DISCOVERER
 
 
idgroup discov author
1 CHR Center for High Ang. Res. Astronomy (speckle interferometry systems)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
10443-7052 DUN 99 AC 2000 9 44 42.2 6.26 9.64 A5IV-V N D 104420.10-705135.0
10443-7052 DUN 99 AC 2015 11 45 42.6 6.26 9.75 A5IV-V N 104420.10-705135.0

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WDS 10443-7052 DUN 99 AC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 10443-7052 DUN 99 AC : MEASURES
 
 
No records found.

 
 
WDS 10443-7052 : VIRTUAL EYEPIECE
 
 

virtual eyepiece
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WDS 10443-7052 : ALADIN DSS IMAGE @
 
 
Error -22130
Not valid ID.
Error -22130
Not valid ID.
Error -27220
Not valid ID.