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Current system
20457+1302
WFC 258


Nearby doubles
19' : 20446+1312
TDS1098

22' : 20450+1244
BU 64AB

22' : 20471+1257
BPM2265

26' : 20440+1256
DAM 218

28' : 20460+1235
KPP 477

29' : 20439+1255
J 1888

35' : 20466+1334
GWP2996

35' : 20446+1333
YSC 242AB

39' : 20441+1258
J 1889

39' : 20438+1330
BPM2238

44' : 20467+1343
BPM2262

44' : 20440+1225
HJ 1566AB

45' : 20426+1300
GWP2988

45' : 20449+1219
STF2723AB

46' : 20428+1244
BPM2234

48' : 20488+1248
GWP3000

50' : 20426+1244
STF2718AB

55' : 20492+1243
GWP3001

56' : 20426+1335
HEI 279AB

58' : 20442+1209
BPM2240

59' : 20486+1223
BPM2273

61' : 20496+1322
TDT2565

61' : 20444+1205
A 875

63' : 20458+1405
BPM2256

63' : 20499+1255
HJ 1577

65' : 20498+1321
HJ 1578



Selections
Full WDS
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.

20457+1302 WFC 258

 
 
20h 45m 39.66s +13° 02' 23.7" P.A. 284.00 sep 11.7 mag 11.90,12.90
 
 
Coord 2000 20457+1302 Discov num WFC 258 Comp Coord arcsec 2000 20 45 39.66 +13 02 23.7
Date first 1906 Date last 2015 Obs 10
Pa first 301 Pa last 283.7 P.A. Now (θ) 283.7°
Sep first 1.4 Sep last 11.69 Sep. Now (ρ) 11.69"
Mag pri 11.90 Mag sec 12.90 delta mag (ΔM) 1 Spectral class
Pri motion ra +020 Sec motion ra -011
Pri motion dec +020 Sec motion dec -007
Notes
rPM=1.453
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Delphinus Tycho2 1097-01567-1 Gaia DR2 1761219754261902720
 
 
WDS 20457+1302 WFC 258 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
WFC (Washington Fundamental Cat. - astrographs)
WFC1939 Pa - Schlesinger, F. & Barney, I. 1939TOYal..11....1S
WFC1939 Trans. Astron. Obs. Yale Univ., 11, 1, 1939 (-10 to -14 deg zones)
WFC1940a Pa - Schlesinger, F. & Barney, I. 1940TOYal..12a...1S
WFC1940a Trans. Astron. Obs. Yale Univ., 12a, 1, 1940 (-14 to -18 deg zones)
WFC1940b Pa - Schlesinger, F. & Barney, I. 1940TOYal..12b...1S
WFC1940b Trans. Astron. Obs. Yale Univ., 12b, 1, 1940 (-18 to -20 deg zones)
WFC1943a Pa - Schlesinger, F. & Barney, I. 1943TOYal..13a...1S
WFC1943a Trans. Astron. Obs. Yale Univ., 13a, 1, 1943 (-20 to -22 deg zones)
WFC1943b Pa - Schlesinger, F. & Barney, I. 1943TOYal..13b...1S
WFC1943b Trans. Astron. Obs. Yale Univ., 13b, 1, 1943 (-27 to -30 deg zones)
WFC1943c Pa - Schlesinger, F. & Barney, I. 1943TOYal..14....1S
WFC1943c Trans. Astron. Obs. Yale Univ., 14, 1, 1943 (-22 to -27 deg zones)
WFC1945a Pa - Barney, I. 1945TOYal..16....1B
WFC1945a Trans. Astron. Obs. Yale Univ., 16, 1, 1945 (-06 to -10 deg zones)
WFC1945b Pa - Barney, I. 1945TOYal..17....1B
WFC1945b Trans. Astron. Obs. Yale Univ., 17, 1, 1945 (-02 to -06 deg zones)
WFC1947 Pa - Barney, I. 1947TOYal..18....1B
WFC1947 Trans. Astron. Obs. Yale Univ., 18, 1, 1947 (+15 to +20 deg zones)
WFC1948 Pa - Barney, I. 1948TOYal..19....1B
WFC1948 Trans. Astron. Obs. Yale Univ., 19, 1, 1948 (+09 to +15 deg zones)
WFC1949 Pa - Barney, I. 1949TOYal..20....1B
WFC1949 Trans. Astron. Obs. Yale Univ., 20, 1, 1949 (+01 to +05 deg zones)
WFC1950a Pa - Baillaud, J. .
WFC1950a Paris Obs., 1950 (+17 to +25 deg zones)
WFC1950b Pa - Barney, I. 1950TOYal..21....1B
WFC1950b Trans. Astron. Obs. Yale Univ., 21, 1, 1950 (+01 to -02 deg zones)
WFC1950c Pa - Barney, I. 1950TOYal..22A...1B
WFC1950c Trans. Astron. Obs. Yale Univ., 22, 1, 1950 (+05 to +09 deg zones)
WFC1953 Pa - Barney, I. 1953TOYal..24....1B
WFC1953 Trans. Astron. Obs. Yale Univ., 24, 1, 1954 (+25 to +30 deg zones)
WFC1954a Pa - Jackson, J. & Stoy R.H. 1954AnCap..17.....J
WFC1954a Ann. Cape Obs. London 17, 1954
WFC1954a Cape Photographic Catalogue for 1950.0., Vol. 17: Zone -30 deg to -35 deg
WFC1954b Pa - Jackson, J. & Stoy R.H. 1954AnCap..18.....J
WFC1954b Ann. Cape Obs. London 18, 1954
WFC1954b Cape Photographic Catalogue for 1950.0., Vol. 18: Zone -35 deg to -40 deg
WFC1954c Pa - Barney, I. 1954TOYal..25....1B
WFC1954c Trans. Astron. Obs. Yale Univ., 25, 1, 1954 (+20 to +25 deg zones)
WFC1954d Pa - Barney, I., Hoffleit, D., & Jones, R.B. 1954TOYal..26....1B
WFC1954d Trans. Astron. Obs. Yale Univ., 26, 1, 1954 (+85 to +90 deg zones)
WFC1955 Pa - Jackson, J. & Stoy R.H. 1955AnCap..19.....J
WFC1955 Ann. Cape Obs. London 19, 1955
WFC1955 Cape Photographic Catalogue for 1950.0., Vol. 19: Zone -52 deg to -56 deg
WFC1958a Pa - Schorr, R. & Kohlschuetter, A. .
WFC1958a AGK2 Cat. North of -2.5 deg, Vol. 1-15, 1958 (Bergedorf)
WFC1958b Pa - Schorr, R. & Kohlschuetter, A. .
WFC1958b AGK2 Cat. North of -2.5 deg, Vol. 1-15, 1958 (Bonn)
WFC1958c Pa - Jackson, J. & Stoy R.H. 1958AnCap..20..155J
WFC1958c Ann. Cape Obs. London, 20, 155, 1958
WFC1958c Cape Photographic Catalogue for 1950.0. Vol. 20: Zones -56 to -60 deg
WFC1958d Pa - Jackson, J. & Stoy R.H. 1958AnCap..20..155J
WFC1958d Ann. Cape Obs., London, 20, 155, 1958
WFC1958d Cape Photographic Catalogue for 1950.0. Vol. 20: Zones -60 to -64 deg
WFC1959a Pa - Barney, I., Hoffleit, D., & Jones, R.B. 1959TOYal..26....1B
WFC1959a Trans. Astron. Obs. Yale Univ., 26, 1, 1959 (+50 to +55 deg zones)
WFC1959b Pa - Barney, I., Hoffleit, D., & Jones, R.B. 1959TOYal..27....1B
WFC1959b Trans. Astron. Obs. Yale Univ., 27, 1, 1959 (+55 to +60 deg zones)
WFC1966a Pa - Stoy R.H. 1966AnCap..21....0S
WFC1966a Ann. Cape Obs. London, 21, 1966
WFC1966a Cape Photographic Catalogue for 1950.0. Vol. 21: Zones -64 to -68 deg
WFC1966b Pa - Stoy R.H. 1966AnCap..21....0S
WFC1966b Ann. Cape Obs. London, 21, 1966
WFC1966b Cape Photographic Catalogue for 1950.0. Vol. 21: Zones -68 to -72 deg
WFC1966c Pa - Stoy R.H. 1966AnCap..21....0S
WFC1966c Ann. Cape Obs. London, 21, 1966
WFC1966c Cape Photographic Catalogue for 1950.0. Vol. 21: Zones -72 to -76 deg
WFC1966d Pa - Stoy R.H. 1966AnCap..21....0S
WFC1966d Ann. Cape Obs. London, 21, 1966
WFC1966d Cape Photographic Catalogue for 1950.0. Vol. 21: Zones -76 to -80 deg
WFC1967 Pa - Hoffleit, D. 1967TOYal..28....1H
WFC1967 Trans. Astron. Obs. Yale Univ., 28, 1, 1967 (-30 to -35 deg zones)
WFC1968a Pa - Stoy R.H. 1968AnCap..22..125S
WFC1968a Ann. Cape Obs., London, 22, 125, 1968
WFC1968a Cape Photographic Catalogue for 1950.0. Vol. 22: Zones -80 to -89 deg
WFC1968b Pa - Hoffleit, D. 1968TOYal..29....1H
WFC1968b Trans. Astron. Obs. Yale Univ., 29, 1, 1968 (-35 to -40 deg zones)
WFC1970 Pa - Hoffleit, D., Eckert, D., Lu, P., & Paranya, K. 1970TOYal..30....1H
WFC1970 Trans. Astron. Obs. Yale Univ., 30, 1, 1970 (-40 to -50 deg zones)
WFC1971 Pa - Lu, P.K. 1971TOYal..31....1L
WFC1971 Trans. Astron. Obs. Yale Univ., 31, 1, 1971 (-70 to -90 deg zones)
WFC1975 Pa - Dieckvoss, W. .
WFC1975 AGK3 Cat. North of -2.5 deg dec, Vol. 1-8, 1975
WFC1983a Pa - Eichhorn, H., Googe, W.D., Lukac, C.F., & Murphy, J.K. 1983AJ.....88..546E
WFC1983a AJ 88, 546, 1983 (Sydney Obs. -48 to -54 deg zones)
WFC1983b Pa - King, D.S. & Lomb, N.R. 1983RSNSW.116...53K
WFC1983b Journal & Proc., Royal Soc. New South Wales 116, 53-70, 1983
WFC1983b (Sydney Obs. -51 to -63.5 deg zones)
WFC1983c Pa - Fallon, F.W. & Hoffleit, D. 1983TrAOY..32....1F
WFC1983c Trans. Astron. Obs. Yale Univ., 32, 1, 1983 (-60 to -70 deg zones)
WFC1992 Pa - Zacharias, N., de Vegt, C., Nicholson, W., & Penston, M.J. 1992A&A...254..397Z
WFC1992 A&A 254, 397, 1992 (CPC2)
WFC1994 Pa - Bystrov, N.F., Polojentsev, D.D, Potter, H.I., Yagudin, L.I., & Zallez, R.F. 1994BICDS..44....3B
WFC1994 Bull. Inf. CDS 44, 3, 1994 (FOKAT)
WFC1998 Pa j Urban, S.E., Corbin, T.E., Wycoff, G.L., Martin, J.C., Jackson, E.S., 1998AJ....115.1212U
WFC1998 Zacharias, M.I., & Hall, D.M.
WFC1998 AJ 115, 1212, 1998 (Astrographic Cat. 2000)
WFC1999 Pa - Zacharias, N. & Zacharias, M.I. 1999AJ....118.2503Z
WFC1999 AJ 118, 2503, 1999
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20457+1302 WFC 258 2001 3 286 11.3 11.90 12.90 D 204539.66+130223.7
20457+1302 WFC 258 2010 6 284 10.7 11.90 12.90 204539.66+130223.7
20457+1302 WFC 258 2015 7 284 11.7 11.90 12.90 204539.66+130223.7

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

 
 
WDS 20457+1302 WFC 258 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20457+1302 WFC 258 : MEASURES
 
 
No records found.

 
 
WDS 20457+1302 : VIRTUAL EYEPIECE
 
 

20457+1302 WFC 258A mag 11.9 20457+1302 WFC 258B sep 11.4 P.A. 284.00 mag 12.9 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 20457+1302 : ALADIN DSS IMAGE @ 20h 45m 39.66s +13° 02' 23.7"
 
 
 
 
WDS 20457+1302 WFC 258 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20457+1302 WFC 258 distance=0' 20446+1312 TDS1098 distance=19' 20450+1244 BU 64AB distance=22' 20450+1244 STTA209AC distance=22' 20450+1244 BU 64AD distance=22' 20471+1257 BPM2265 distance=22' 20450+1244 D 32CD distance=23' 20440+1256 DAM 218 distance=26' 20460+1235 KPP 477 distance=28' 20439+1255 J 1888 distance=29' 20466+1334 GWP2996 distance=35' 20446+1333 YSC 242AB distance=35' 20441+1258 J 1889 distance=39' 20438+1330 BPM2238 distance=39' 20467+1343 BPM2262 distance=44' 20440+1225 HJ 1566AB distance=44' 20440+1225 HJ 1566AC distance=44' 20426+1300 GWP2988 distance=45' 20449+1219 B 2910Aa,Ab distance=45' 20449+1219 STF2723AB distance=45' 20449+1219 BU 1492AC distance=45' 20428+1244 BPM2234 distance=46' 20488+1248 GWP3000 distance=48' 20426+1244 STF2718BC distance=49' 20426+1244 STF2718AB distance=50' 20426+1244 STF2718AC distance=50' 20492+1243 GWP3001 distance=55' 20426+1335 HEI 279BC distance=56' 20426+1335 HEI 279AB distance=56' 20442+1209 BPM2240 distance=58' 20486+1223 BPM2273 distance=59' 20496+1322 TDT2565 distance=61' 20444+1205 A 875 distance=61' 20458+1405 BPM2256 distance=63' 20499+1255 HJ 1577 distance=63' 20498+1321 HJ 1578 distance=65' 20418+1231 STF2715 distance=65' 20497+1331 BPM2277 distance=66' 20496+1233 BU 1495AB distance=66' 20496+1233 BU 1495AC distance=66' 20496+1233 BU 1495AD distance=66' 20421+1341 BPM2232 distance=66' 20502+1246 J 3277 distance=68' 20413+1327 BPM2228BC distance=69' 20503+1317 BPM2279 distance=69' 20413+1327 BPM2227AB distance=69' 20446+1154 BPM2251 distance=70' 20481+1404 UC 4293 distance=72' 20420+1212 BPM2231 distance=74' 20445+1415 BPM2244 distance=75' 20408+1332 GWP2982 distance=78' 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 20457+1302 WFC 258 284 11.7
Show 20446+1312 TDS1098 279 0.9 19
Show 20450+1244 BU 64 AB 174 0.7 22
Show 20450+1244 STTA209 AC 155 97.2 22
Show 20450+1244 BU 64 AD 117 64.3 22
Show 20471+1257 BPM2265 51 16.1 22
Show 20450+1244 D 32 CD 15 60.8 23
Show 20440+1256 DAM 218 342 5.7 26
Show 20460+1235 KPP 477 52 4.5 28
Show 20439+1255 J 1888 158 10.0 29
Show 20466+1334 GWP2996 157 54.2 35
Show 20446+1333 YSC 242 AB 157 1.5 35
Show 20441+1258 J 1889 10 4.6 39
Show 20438+1330 BPM2238 50 66.9 39
Show 20467+1343 BPM2262 331 74.6 44
Show 20440+1225 HJ 1566 AB 16 16.9 44
Show 20440+1225 HJ 1566 AC 331 32.4 44
Show 20426+1300 GWP2988 23 19.1 45
Show 20449+1219 B 2910 Aa,Ab 52 0.1 45
Show 20449+1219 STF2723 AB 140 1.0 45
Show 20449+1219 BU 1492 AC 30 37.0 45
Show 20428+1244 BPM2234 331 93.5 46
Show 20488+1248 GWP3000 280 24.1 48
Show 20426+1244 STF2718 BC 346 167.3 49
Show 20426+1244 STF2718 AB 87 8.5 50
Show 20426+1244 STF2718 AC 346 167.2 50
Show 20492+1243 GWP3001 126 94.3 55
Show 20426+1335 HEI 279 BC 211 4.1 56
Show 20426+1335 HEI 279 AB 115 25.1 56
Show 20442+1209 BPM2240 148 55.1 58
Show 20486+1223 BPM2273 132 52.3 59
Show 20496+1322 TDT2565 136 1.4 61
Show 20444+1205 A 875 208 2.5 61
Show 20458+1405 BPM2256 194 73.0 63
Show 20499+1255 HJ 1577 245 9.4 63
Show 20498+1321 HJ 1578 311 11.5 65
Show 20418+1231 STF2715 2 12.4 65
Show 20497+1331 BPM2277 190 94.4 66
Show 20496+1233 BU 1495 AB 19 52.1 66
Show 20496+1233 BU 1495 AC 86 105.5 66
Show 20496+1233 BU 1495 AD 276 189.6 66
Show 20421+1341 BPM2232 346 68.4 66
Show 20502+1246 J 3277 326 4.1 68
Show 20413+1327 BPM2228 BC 141 118.1 69
Show 20503+1317 BPM2279 146 89.2 69
Show 20413+1327 BPM2227 AB 173 68.5 69
Show 20446+1154 BPM2251 51 84.7 70
Show 20481+1404 UC 4293 5 14.4 72
Show 20420+1212 BPM2231 330 108.9 74
Show 20445+1415 BPM2244 315 57.7 75
Show 20408+1332 GWP2982 31 88.8 78

 
 
WDS 20457+1302 : COMPONENTS
 
 
  A
B pa=284.0°
sep=11.41"
 
 
20457+1302 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 204539.66+130223.7 Mag 11.9 PmRA 20.00
PmDE 20.0 Tycho2 1097-01567-1
Tycho2
Tycho2 1097-01567-1 Pflag RAmdeg 311.41526345 DEmdeg 13.03993562
PmRA 13.6 PmDE 25.9 E RAmdeg 53 E DEmdeg 67
E pmRA 2.7 E pmDE 2.7 EpRAm 1987.17 EpDEm 1983.27
Num 2 Q RAmdeg Q DEmdeg Q pmRA
Q pmDE BTmag 11.846 E BTmag 0.097 VTmag 11.293
E VTmag 0.102 Prox 33 TYC HIP
CCDM RAdeg 311.41523111 DEdeg 13.03987417 EpRA 1990 1.73
EpDE 1990 1.47 E RAdeg 53.8 E DEdeg 71.0 Posflg
Corr 0.1
 
 
20457+1302 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 204538.90+130226.5 Mag 12.9 PmRA -11.00
PmDE -7.0 Tycho2 1097-02972-1 Calc delta mag 1 Calc coord yes
Tycho2
Tycho2 1097-02972-1 Pflag RAmdeg 311.41425712 DEmdeg 13.03997470
PmRA -11.3 PmDE 19.7 E RAmdeg 97 E DEmdeg 119
E pmRA 3.2 E pmDE 3.3 EpRAm 1978.97 EpDEm 1970.90
Num 2 Q RAmdeg Q DEmdeg Q pmRA
Q pmDE BTmag 12.914 E BTmag 0.303 VTmag 12.492
E VTmag 0.258 Prox 33 TYC HIP
CCDM RAdeg 311.41428389 DEdeg 13.03992806 EpRA 1990 1.73
EpDE 1990 1.49 E RAdeg 105.1 E DEdeg 136.7 Posflg
Corr 0.0