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Current system
06149+2230
BU 1008
Propus


Nearby doubles
3' : 06147+2231
DBR 157

4' : 06146+2231
DBR 158

8' : 06142+2234
L 7

9' : 06143+2233
DBR 160

9' : 06142+2230
DBR 159

26' : 06160+2210
COU 274

30' : 06146+2259
POU1167

33' : 06144+2302
POU1165

36' : 06174+2226
J 686

39' : 06176+2223
KPP1000

42' : 06124+2253
COU 272

43' : 06134+2308
POU1159

44' : 06127+2159
COU 273

45' : 06174+2258
POU1191

49' : 06126+2307
POU1148

50' : 06130+2312
POU1152

50' : 06162+2317
POU1183

50' : 06164+2146
STJ 35

50' : 06130+2313
POU1154

50' : 06145+2320
POU1166

51' : 06162+2318
POU1181

51' : 06132+2316
POU1158

52' : 06185+2241
HDS 863

54' : 06165+2318
J 341AB

54' : 06169+2317
POU1186

56' : 06160+2324
POU1180



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Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

06149+2230 BU 1008 (Propus)

 
 
06h 14m 52.69s +22° 30' 24.6" P.A. 256.00 sep 1.9 mag 3.52,6.15 Sp M2III dist. 117.92 pc (384.66 l.y.)
 
 
Coord 2000 06149+2230 Discov num BU 1008 Comp Coord arcsec 2000 06 14 52.69 +22 30 24.6
Date first 1881 Date last 2021 Obs 113
Pa first 300 Pa last 256.2 P.A. Now (θ) 256.2°
Sep first 1.1 Sep last 1.9 Sep. Now (ρ) 1.9"
Mag pri 3.52 Mag sec 6.15 delta mag (ΔM) 2.63 Spectral class M2III (red)
Pri motion ra -060 Sec motion ra
Pri motion dec -008 Sec motion dec
Notes N C (See Notes, Has orbit and linear solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Propus Constellation Gemini SAO 78135 HIP 29655
Tycho2 1877-01716-1 Gaia DR2 3377072212925223424 HD 42995 HR 2216
GC 7969 ADS 4841 BD BD+22 1241 Bayer Eta Geminorum
Bayer name Eta Gem Flamsteed 7 Geminorum Flamsteed name 7 Gem Distance 117.92
Distance ly 384.66 Bayer greek η Gem
Other names PRAEPES, TEJAT PRIOR
Meaning forefoot
 
 
ORBITAL ELEMENTS
 
 
Period (P)1031.1632y± 474.7674 Periastron (T)2078.1316y± 134.4663 Semi-major axis (a)5.10959a± 3.20503
Eccentricity (e)0.84952± 0.13765 Inclination (i)96.646°± 13.63 Longitude of periastron (ω)253.622°± 30.445
Node (Ω)65.006°± 7.543 Notesn ReferenceIzm2019
Equinox Last observation2012 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 258.9 1.708
2001 258.7 1.712
2002 258.5 1.716
2003 258.4 1.720
2004 258.2 1.724
2005 258.0 1.727
2006 257.8 1.731
2007 257.6 1.734
2008 257.4 1.737
2009 257.2 1.740
2010 257.1 1.743
2011 256.9 1.745
2012 256.7 1.748
2013 256.5 1.750
2014 256.3 1.752
2015 256.2 1.754
2016 256.0 1.756
2017 255.8 1.757
2018 255.6 1.758
2019 255.4 1.759
2020 255.2 1.760
2021 255.1 1.760
2022 254.9 1.761
2023 254.7 1.761
2024 254.5 1.760
2025 254.4 1.760
2026 254.2 1.759
2027 254.0 1.758
2028 253.8 1.756
2029 253.6 1.754
2030 253.5 1.752
2031 253.3 1.750
2032 253.1 1.747
2033 252.9 1.743
2034 252.7 1.739
2035 252.5 1.735
2036 252.4 1.730
2037 252.2 1.725
2038 252.0 1.720
2039 251.8 1.713
2040 251.6 1.706
2041 251.4 1.699
2042 251.2 1.691
2043 251.0 1.682
2044 250.8 1.673
2045 250.6 1.663
2046 250.4 1.652
2047 250.2 1.640
2048 250.0 1.627
2049 249.8 1.614
2050 249.6 1.599


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds06149%2B2230b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic