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Doubles in session


Current system
17104+2107
ALP 20 AB


Nearby doubles
6' : 17107+2104
TDT 251

10' : 17105+2116
DAM 945

10' : 17111+2106
TDT 255

21' : 17103+2127
FAL 56

25' : 17121+2114
STF2135AB

29' : 17084+2113
DAM 890AB

31' : 17082+2110
DAM 887AB

36' : 17087+2040
BRT2431

39' : 17091+2141
DAM 907

39' : 17122+2137
WFC 189

52' : 17140+2119
COU 111AB

53' : 17086+2153
DAM 894

56' : 17107+2202
DAM 949

58' : 17115+2012
DAM 971AB

61' : 17071+2029
SLE 9

63' : 17099+2209
DAM 927

70' : 17111+2216
DAM 962

73' : 17133+2208
KPP 635

82' : 17063+2205
HO 556

83' : 17064+2208
COU 109

84' : 17045+2123
UC 3285

86' : 17087+1945
J 1130

87' : 17082+2228
DAM 886

87' : 17118+2232
ALP 21

91' : 17147+2215
ITF 156

91' : 17148+2214
ITF 11



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

17104+2107 ALP 20 AB

 
 
17h 10m 25.45s +21° 07' 15.5" P.A. 278.00 sep 7.7 mag 15.74,
 
 
Coord 2000 17104+2107 Discov num ALP  20 Comp AB Coord arcsec 2000 17 10 25.45 +21 07 15.5
Date first 2001 Date last 2001 Obs 1
Pa first 278 Pa last 278 P.A. Now (θ) 278°
Sep first 7.7 Sep last 7.7 Sep. Now (ρ) 7.7"
Mag pri 15.74 Mag sec delta mag (ΔM) Spectral class
Pri motion ra Sec motion ra
Pri motion dec Sec motion dec
Notes N U K (See Notes, Proper motion indicates non-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
This double is not physical.
 
 
17104+2107 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 17 10 25 +21 07 16 ALP 20 AB 2001 1 278 7.7 15.74 <===
Show 17 10 25 +21 07 16 ALP 20 AC 2001 1 124 24.0 15.74
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Hercules Gaia DR2 4567789051779439872
 
 
WDS 17104+2107 ALP 20 AB : NOTES
 
 
discov_num notes refcode
ALP 20 2MASSW J1710255+210715
Physical companionship to this ultracool dwarf ruled out based on i-z
and z-J colors, using photometry from SDSS. AlP2007
 
 
REFERENCES
 
 
refcode metd author reference
AlP2007 Ci - Allen, P.R., Koerner, D.W., McElwain, M.W., Cruz, K.L., & Reid, I.N. 2007AJ....133..971A
AlP2007 AJ 133, 971, 2007
AlP2007 (deep-imaging search for wide companions to 132 M7-L8 dwarfs, using IRTF NSFCam)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17104+2107 ALP 20 AB 2001 1 278 7.7 15.74   N K 171025.45+210715.5

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

 
 
WDS 17104+2107 ALP 20 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 17104+2107 ALP 20 AB : MEASURES
 
 
No records found.

 
 
WDS 17104+2107 : VIRTUAL EYEPIECE
 
 

17104+2107 ALP 20A mag 15.74 17104+2107 ALP 20B sep 7.2 P.A. 278.60 17104+2107 ALP 20C sep 22.9 P.A. 125.90 virtual eyepiece
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 17104+2107 : ALADIN DSS IMAGE @ 17h 10m 25.45s +21° 07' 15.5"
 
 
 
 
WDS 17104+2107 ALP 20 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

17104+2107 ALP 20AB distance=0' 17107+2104 TDT 251 distance=6' 17105+2116 DAM 945 distance=10' 17111+2106 TDT 255 distance=10' 17103+2127 FAL 56 distance=21' 17121+2114 STF2135AB distance=25' 17121+2114 STF2135AC distance=25' 17084+2113 DAM 890AB distance=29' 17084+2113 DAM 890AC distance=29' 17082+2110 DAM 887AB distance=31' 17082+2110 DAM 887AC distance=31' 17087+2040 BRT2431 distance=36' 17091+2141 DAM 907 distance=39' 17122+2137 WFC 189 distance=39' 17140+2119 COU 111AB distance=52' 17140+2119 GII 242Aa,Ab distance=52' 17086+2153 DAM 894 distance=53' 17107+2202 DAM 949 distance=56' 17115+2012 DAM 971AB distance=58' 17115+2012 DAM 971AC distance=58' 17071+2029 SLE 9 distance=61' 17099+2209 DAM 927 distance=63' 17111+2216 DAM 962 distance=70' 17133+2208 KPP 635 distance=73' 17063+2205 HO 556 distance=82' 17064+2208 COU 109 distance=83' 17084+1950 RAO 673AE distance=83' 17045+2123 UC 3285 distance=84' 17087+1945 J 1130 distance=86' 17082+2228 DAM 886 distance=87' 17118+2232 ALP 21 distance=87' 17147+2215 ITF 156 distance=91' 17148+2214 ITF 11 distance=91' 17145+1956 HU 488AB distance=92' 17155+2007 HU 489 distance=94' 17067+2225 COU 110 distance=94' 17173+2113 HU 668 distance=96' 17150+2219 ITF 155 distance=96' 17093+2244 OSO 76 distance=99' 17147+2227 NSN 688 distance=100' 17080+2244 BRT2430 distance=103' 17053+1947 SLE 6 distance=108' 17109+1915 DAM 954BC distance=113' 17109+1915 DAM 954BD distance=113' 17109+1915 DAM 954AB distance=113' 17109+1915 DAM 954AC distance=113' 17109+1915 DAM 954AD distance=113' 17069+2254 KUI 123 distance=118' 17139+2255 TDT 274 distance=118' 17093+2304 POU3258 distance=119' 17025+2023 BRT2427 distance=119' 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 17104+2107 ALP 20 AB 278 7.7
Show 17104+2107 ALP 20 AC 124 24.0
Show 17107+2104 TDT 251 302 0.5 6
Show 17105+2116 DAM 945 321 7.8 10
Show 17111+2106 TDT 255 200 0.6 10
Show 17103+2127 FAL 56 99 8.8 21
Show 17121+2114 STF2135 AB 194 8.7 25
Show 17121+2114 STF2135 AC 208 162.1 25
Show 17084+2113 DAM 890 AB 255 2.9 29
Show 17084+2113 DAM 890 AC 164 9.5 29
Show 17082+2110 DAM 887 AB 309 8.5 31
Show 17082+2110 DAM 887 AC 106 31.5 31
Show 17087+2040 BRT2431 317 4.7 36
Show 17091+2141 DAM 907 324 4.0 39
Show 17122+2137 WFC 189 302 6.6 39
Show 17140+2119 COU 111 AB 250 0.6 52
Show 17140+2119 GII 242 Aa,Ab 9 0.1 52
Show 17086+2153 DAM 894 74 8.3 53
Show 17107+2202 DAM 949 234 4.2 56
Show 17115+2012 DAM 971 AB 318 1.0 58
Show 17115+2012 DAM 971 AC 99 3.9 58
Show 17071+2029 SLE 9 173 19.7 61
Show 17099+2209 DAM 927 22 6.3 63
Show 17111+2216 DAM 962 303 6.6 70
Show 17133+2208 KPP 635 81 5.8 73
Show 17063+2205 HO 556 140 8.5 82
Show 17064+2208 COU 109 140 8.5 83
Show 17084+1950 RAO 673 AE 114 7.7 83
Show 17045+2123 UC 3285 249 20.3 84
Show 17087+1945 J 1130 279 1.3 86
Show 17082+2228 DAM 886 234 9.0 87
Show 17118+2232 ALP 21 53 36.6 87
Show 17147+2215 ITF 156 26 14.1 91
Show 17148+2214 ITF 11 41 4.3 91
Show 17145+1956 HU 488 AB 106 2.9 92
Show 17155+2007 HU 489 36 1.0 94
Show 17067+2225 COU 110 90 1.4 94
Show 17173+2113 HU 668 38 1.3 96
Show 17150+2219 ITF 155 190 2.3 96
Show 17093+2244 OSO 76 313 15.5 99
Show 17147+2227 NSN 688 111 2.9 100
Show 17080+2244 BRT2430 331 3.7 103
Show 17053+1947 SLE 6 76 36.0 108
Show 17109+1915 DAM 954 BC 68 9.6 113
Show 17109+1915 DAM 954 BD 261 7.7 113
Show 17109+1915 DAM 954 AB 312 18.8 113
Show 17109+1915 DAM 954 AC 342 16.9 113
Show 17109+1915 DAM 954 AD 297 24.5 113
Show 17069+2254 KUI 123 325 4.2 118
Show 17139+2255 TDT 274 234 0.6 118
Show 17093+2304 POU3258 59 10.9 119

 
 
WDS 17104+2107 : COMPONENTS
 
 
  A B
B pa=278.6°
sep=7.19"
 
C pa=125.9°
sep=22.90"
pa=119.4°
sep=29.48"
 
 
17104+2107 A
 
 
Coord arcsec 2000 171025.45+210715.5 Mag 15.74
 
 
17104+2107 B
 
 
Coord arcsec 2000 171024.94+210716.6 Calc delta mag 15.74 Calc coord yes
 
 
17104+2107 C
 
 
Coord arcsec 2000 171026.78+210702.1 Calc delta mag 15.74 Calc coord yes