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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2731593623418386 3.8684e-08  
a 2.552645684493965 1.0061e-08 au
q 1.855366617032948 9.6972e-08 au
i 15.17943111383149 3.8041e-06 deg
node 291.9882993371774 1.3956e-05 deg
peri 217.4073510463757 1.5536e-05 deg
M 131.1128703458591 9.6426e-06 deg
tp 2458457.965878351267
(2018-Dec-05.46587835)
3.8881e-05 TDB
period 1489.649973174523
4.08
8.8072e-06
2.411e-08
d
yr
n .2416675101418763 1.4288e-09 deg/d
Q 3.249924751954982 1.281e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2266  
   data-arc span      32054 days (87.76 yr)  
   first obs. used      1933-01-25  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36441  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:20:58  

Additional Information
 Earth MOID = .889745 au 
 Jupiter MOID = 1.89665 au 
 T_jup = 3.339 
[ show covariance matrix ]

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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