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1250 Galanthus (1933 BD)
Classification: Main-belt Asteroid          SPK-ID: 2001250
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2731593560125107 3.9369e-08  
a 2.552645686135666 1.0245e-08 au
q 1.855366634382734 9.9025e-08 au
i 15.17943124970726 3.8422e-06 deg
node 291.9882971941262 1.564e-05 deg
peri 217.4073502332702 1.733e-05 deg
M 131.1128723992416 9.9473e-06 deg
tp 2458457.965869331156
(2018-Dec-05.46586933)
4.0333e-05 TDB
period 1489.649974611596
4.08
8.9684e-06
2.455e-08
d
yr
n .2416675099087384 1.455e-09 deg/d
Q 3.249924737888598 1.3044e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2067  
   data-arc span      31970 days (87.53 yr)  
   first obs. used      1933-01-25  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37436  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:30:44  

Additional Information
 Earth MOID = .889745 au 
 Jupiter MOID = 1.89665 au 
 T_jup = 3.339 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457072.5 (2015-Feb-19.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2729785315262825 3.9198e-08  
q 1.854115382700359 9.8343e-08 au
tp 2456968.581724845617
(2014-Nov-07.08172485)
3.9214e-05 TDB
node 292.0306342433312 1.5655e-05 deg
peri 217.0893862794157 1.7372e-05 deg
i 15.17460546168777 3.8401e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2067  
   data-arc span      31970 days (87.53 yr)  
   first obs. used      1933-01-25  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37436  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:30:44  

Additional Information
 Jupiter MOID = 1.89665 au 
 T_jup = 3.339 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.536492622890114E-15 -3.844939369931379E-15 5.280941494885101E-13 -2.504288046205193E-15 1.057236776532465E-13 1.114190860986761E-16
q -3.844939369931379E-15 9.67138550350468E-15 -1.334652960406808E-12 6.305168841122959E-15 -2.666484579484013E-13 -1.753659784136196E-16
tp 5.280941494885101E-13 -1.334652960406808E-12 1.537753598032832E-9 -2.547989991328214E-12 3.171996401380894E-10 -8.90270152470004E-13
node -2.504288046205193E-15 6.305168841122959E-15 -2.547989991328214E-12 2.450922523940315E-10 -2.370034143822812E-10 6.787960603963264E-12
peri 1.057236776532465E-13 -2.666484579484013E-13 3.171996401380894E-10 -2.370034143822812E-10 3.018000057668624E-10 -6.747670353115126E-12
i 1.114190860986761E-16 -1.753659784136196E-16 -8.90270152470004E-13 6.787960603963264E-12 -6.747670353115126E-12 1.474600316272955E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.4   n/a MPO473780 IRAS observations used: 3
diameter diameter 20.062 km 0.112 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 3.92 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Binzel, R.P.; Mulholland, J.D. (1983) Icarus 56, 519-533.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.055   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1250 Galanthus (1933 BD)          Discovered 1933-Jan-25 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1933 BD = 1971 OQ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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