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Doubles in session


Current system
21445+1446
LUH 4 AB
HN Peg


Nearby doubles
22' : 21434+1432
BPM2405

29' : 21428+1429
HEI 288

32' : 21458+1419
J 164

45' : 21415+1442
SLW1249

49' : 21477+1432
BOY 12

49' : 21425+1526
BPM2403

57' : 21429+1537
BPM2404

59' : 21486+1440
HJ 1693

60' : 21432+1350
CBL 534

61' : 21411+1412
TDT3108

62' : 21458+1545
STTA224

69' : 21493+1450
J 915

70' : 21475+1352
BPM2406

70' : 21399+1427
AG 419

71' : 21465+1551
CLZ 82

72' : 21431+1338
HJ 1682

74' : 21397+1423
LDS4901

74' : 21409+1355
TDT3105

80' : 21500+1457
J 853

85' : 21443+1611
UC 4542

85' : 21421+1328
LDS4904

89' : 21498+1402
LEP 102

96' : 21454+1312
UC 4551

99' : 21420+1617
J 287

101' : 21450+1626
J 821

101' : 21502+1545
UC 4577



Selections
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Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
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Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

21445+1446 LUH 4 AB (HN Peg)

 
 
21h 44m 31.33s +14° 46' 18.9" P.A. 254.00 sep 43.2 mag 4.60,15.10 Sp G0V+T2.5 dist. 17.89 pc (58.36 l.y.)
 
 
Coord 2000 21445+1446 Discov num LUH   4 Comp AB Coord arcsec 2000 21 44 31.33 +14 46 18.9
Date first 1998 Date last 2004 Obs 2
Pa first 255 Pa last 254.4 P.A. Now (θ) 254.4°
Sep first 42.7 Sep last 43.2 Sep. Now (ρ) 43.2"
Mag pri 4.60 Mag sec 15.10 delta mag (ΔM) 10.5 Spectral class G0V+T2.5 (yellow/brown dwarf)
Pri motion ra +232 Sec motion ra +230
Pri motion dec -114 Sec motion dec -111
Notes N V K (See Notes, Proper motion indicates physical, K-band or other infrared magnitudes)
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
rPM=0.014 (< 0.3, Physical double)
This double is physical.
 
 
21445+1446 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HN Peg 107364 21 44 31 +14 46 19 LUH 4 AB 2004 2 254 43.2 4.60 15.10 10.50 <===
Show 21 44 31 +14 46 19 LAF 66 AC 2011 2 35 3.0 4.60 20.70 16.10
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name HN Peg Constellation Pegasus SAO 107364 HIP 107350
Tycho2 1133-01258-1 Gaia DR2 1772187382746856320 HD 206860 HR 8314
GL Gl 836.7 BD BD+14 4668 FK5 3737 Distance 17.89
Distance ly 58.36
 
 
WDS 21445+1446 LUH 4 AB (HN Peg) : NOTES
 
 
discov_num notes refcode
LUH 4 GJ 9751 = HN Peg
CHARA Array Limb-darkened diameter of A : CIA2013c
R = 1.0189 +/- 0.0291 \rsun, L = 1.0992 +/-0.0190 \lsun,
Teff = 5860 +/- 83 K, M = 0.975 \msun, Age = 5.8 Gyr.
Common proper motion for both components was determined through
comparison of relative location with that obtained by 2MASS. The B
component is determined to be a possible T dwarf (T2.5 +/- 0.5) based
on mid-IR colors and magnitudes. Age is determined as 0.3 +/- 0.2 Gyr
and mass of secondary 0.021 +/- 0.009 Msun. Luh2007
 
 
REFERENCES
 
 
refcode metd author reference
CIA2013c not j Boyajian, T.S., von Braun, K., van Belle, G., Farrington, C., Schaefer, G., Jones, 2013ApJ...771...40B
CIA2013c J., White, R., McAlister, H.A., ten Brummelaar, T.A., Ridgway, S., Gies, D.R., .
CIA2013c Sturmann, L., Sturmann, J., Turner, N.H., Goldfinger, P.J. & Vargas, N. .
CIA2013c ApJ 771, 40, 2013 .
Luh2007 Hi w Luhman, K.L., Patten, B.M., Marengo, M., Schuster, M.T., Hora, J.L., Ellis, R.G., 2007ApJ...654..570L
Luh2007 +Hx Stauffer, J.R., Sonnett, S.M., et al.
Luh2007 ApJ 654, 570, 2007
 
 
DISCOVERER
 
 
idgroup discov author
1 LAF Lafreniere, D., Doyon, R., Marois, C., Nadeau, D., Oppenheimer, B.R., Roche, P.F.,
1 LAF Rigaut, F., Graham, J.R., et al.
10 LAF Lafreniere, D., Jayawardhana, R., Janson, M., Helling, C., Witte, S., &
10 LAF Hauschildt, P.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21445+1446 LUH 4 AB 2004 1 254 43.2 4.60 15.10 N K 214431.32+144618.9

If you need more information about this double, apply for a data request form to the WDS.

 
 
WDS 21445+1446 LUH 4 AB (HN Peg) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21445+1446 LUH 4 AB (HN Peg) : MEASURES
 
 
No records found.

 
 
WDS 21445+1446 (HN Peg) : VIRTUAL EYEPIECE
 
 

21445+1446 LUH 4A mag 4.6 Sp G0V 21445+1446 LUH 4B sep 41.9 P.A. 253.90 mag 15.1 Sp T2.5 21445+1446 LAF 66C sep 2.9 P.A. 33.70 mag 20.7 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 21445+1446 (HN Peg) : ALADIN DSS IMAGE @ 21h 44m 31.33s +14° 46' 18.9"
 
 
 
 
WDS 21445+1446 LUH 4 AB (HN Peg) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21445+1446 LUH 4AB distance=0' 21434+1432 BPM2405 distance=22' 21428+1429 HEI 288 distance=29' 21458+1419 J 164 distance=32' 21415+1442 SLW1249 distance=45' 21477+1432 BOY 12 distance=49' 21425+1526 BPM2403 distance=49' 21429+1537 BPM2404 distance=57' 21486+1440 HJ 1693 distance=59' 21432+1350 CBL 534 distance=60' 21411+1412 TDT3108 distance=61' 21458+1545 STTA224 distance=62' 21493+1450 J 915 distance=69' 21475+1352 BPM2406 distance=70' 21399+1427 AG 419 distance=70' 21465+1551 CLZ 82 distance=71' 21431+1338 HJ 1682 distance=72' 21397+1423 LDS4901 distance=74' 21409+1355 TDT3105 distance=74' 21500+1457 J 853 distance=80' 21443+1611 UC 4542 distance=85' 21421+1328 LDS4904 distance=85' 21498+1402 LEP 102 distance=89' 21454+1312 UC 4551 distance=96' 21420+1617 J 287 distance=99' 21450+1626 J 821 distance=101' 21502+1545 UC 4577 distance=101' 21504+1549 J 3148 distance=106' 21405+1317 TDS1139 distance=108' 21391+1328 UC 4519 distance=112' 21506+1559 HJ 287 distance=114' 21405+1625 CLO 2Aa,Ab distance=115' 21405+1625 ALP 26AB distance=115' 21365+1511 BPM2400 distance=120' 21490+1304 CBL 535 distance=122' 21518+1336 CRC 40Aa,Ab distance=127' 21518+1336 CRC 40AB distance=127' 21414+1245 BPM2401 distance=130' 21356+1448 BPM2396AB distance=130' 21356+1448 BPM2397BC distance=131' 21504+1626 UC 4580 distance=131' 21355+1414 GWP3075 distance=136' 21425+1233 JNN 134 distance=137' 21377+1312 HJ 1667 distance=137' 21440+1705 LDS6358 distance=138' 21351+1433 BPM2395 distance=138' 21391+1252 ROE 128 distance=139' 21526+1609 J 1725 distance=144' 21510+1637 GWP3102 distance=145' 21544+1427 BPM2412 distance=145' 21535+1551 LDS4921 distance=146' grafico limitrofi
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Show name coord_2000 discov# comp pa sep dist(')
Show 21445+1446 LUH 4 AB 254 43.2
Show 21445+1446 LAF 66 AC 35 3.0
Show 21434+1432 BPM2405 312 78.9 22
Show 21428+1429 HEI 288 241 1.7 29
Show 21458+1419 J 164 300 5.1 32
Show 21415+1442 SLW1249 214 177.6 45
Show 21477+1432 BOY 12 329 0.3 49
Show 21425+1526 BPM2403 45 70.5 49
Show 21429+1537 BPM2404 223 78.3 57
Show 21486+1440 HJ 1693 314 11.7 59
Show 21432+1350 CBL 534 304 13.5 60
Show 21411+1412 TDT3108 251 0.4 61
Show 21458+1545 STTA224 359 59.9 62
Show 21493+1450 J 915 148 3.5 69
Show 21475+1352 BPM2406 157 18.7 70
Show 21399+1427 AG 419 223 3.8 70
Show 21465+1551 CLZ 82 324 155.2 71
Show 21431+1338 HJ 1682 77 21.4 72
Show 21397+1423 LDS4901 319 18.4 74
Show 21409+1355 TDT3105 253 0.4 74
Show 21500+1457 J 853 32 3.1 80
Show 21443+1611 UC 4542 338 15.7 85
Show 21421+1328 LDS4904 343 23.2 85
Show 21498+1402 LEP 102 338 13.3 89
Show 21454+1312 UC 4551 143 23.3 96
Show 21420+1617 J 287 348 3.0 99
Show 21450+1626 J 821 4 2.0 101
Show 21502+1545 UC 4577 221 37.5 101
Show 21504+1549 J 3148 132 9.6 106
Show 21405+1317 TDS1139 284 1.2 108
Show 21391+1328 UC 4519 128 9.1 112
Show 21506+1559 HJ 287 216 16.3 114
Show 21405+1625 CLO 2 Aa,Ab 37 0.1 115
Show 21405+1625 ALP 26 AB 31 29.2 115
Show 21365+1511 BPM2400 345 70.7 120
Show 21490+1304 CBL 535 237 20.8 122
Show 21518+1336 CRC 40 Aa,Ab 138 0.7 127
Show 21518+1336 CRC 40 AB 122 10.9 127
Show 21414+1245 BPM2401 90 69.5 130
Show 21356+1448 BPM2396 AB 334 95.6 130
Show 21356+1448 BPM2397 BC 282 117.0 131
Show 21504+1626 UC 4580 88 26.3 131
Show 21355+1414 GWP3075 193 31.7 136
Show 21425+1233 JNN 134 9 4.8 137
Show 21377+1312 HJ 1667 202 16.4 137
Show 21440+1705 LDS6358 346 64.1 138
Show 21351+1433 BPM2395 22 100.4 138
Show 21391+1252 ROE 128 263 1.4 139
Show 21526+1609 J 1725 52 8.5 144
Show 21510+1637 GWP3102 92 28.0 145
Show 21544+1427 BPM2412 111 93.3 145

 
 
WDS 21445+1446 : COMPONENTS
 
 
  A B
B pa=253.9°
sep=41.88"
 
C pa=33.7°
sep=2.94"
pa=71.4°
sep=44.17"
 
 
21445+1446 A
 
 
Name HN Peg Coord arcsec 2000 214431.33+144618.9 Mag 4.6 Spectral class G0V (yellow)
PmRA 232.00 PmDE -114.0
 
 
21445+1446 B
 
 
Coord arcsec 2000 214428.56+144607.3 Mag 15.1 Spectral class T2.5 (brown dwarf) PmRA 230.00
PmDE -111.0 Calc delta mag 10.5 Calc coord yes
 
 
21445+1446 C
 
 
Coord arcsec 2000 214431.44+144621.3 Mag 20.7 Calc delta mag 16.1 Calc coord yes