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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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .273159362379011 3.8679e-08  
a 2.552645684491615 1.0058e-08 au
q 1.855366616936352 9.6955e-08 au
i 15.17943112767647 3.8023e-06 deg
node 291.9882992526591 1.393e-05 deg
peri 217.4073511408725 1.5507e-05 deg
M 131.1128703366311 9.6375e-06 deg
tp 2458457.965878390201
(2018-Dec-05.46587839)
3.8856e-05 TDB
period 1489.649973172466
4.08
8.804e-06
2.41e-08
d
yr
n .2416675101422101 1.4283e-09 deg/d
Q 3.249924752046879 1.2805e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2289  
   data-arc span      32072 days (87.81 yr)  
   first obs. used      1933-01-25  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .3634  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:59:23  

Additional Information
 Earth MOID = .889745 au 
 Jupiter MOID = 1.89665 au 
 T_jup = 3.339 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457403.5 (2016-Jan-16.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2728701284171778 3.8543e-08  
q 1.854500436562833 9.6385e-08 au
tp 2456968.613760897678
(2014-Nov-07.11376090)
3.7233e-05 TDB
node 292.0310684938763 1.3944e-05 deg
peri 217.1157350651464 1.5544e-05 deg
i 15.17405793739465 3.7996e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2289  
   data-arc span      32072 days (87.81 yr)  
   first obs. used      1933-01-25  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .3634  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:59:23  

Additional Information
 Jupiter MOID = 1.89665 au 
 T_jup = 3.339 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.485584029279366E-15 -3.705530289746645E-15 4.400782534289068E-13 -5.855957320055909E-15 8.402562348866464E-14 4.62519505134144E-16
q -3.705530289746645E-15 9.29011900875031E-15 -1.097317591166803E-12 1.458308909846937E-14 -2.071303746197215E-13 -1.018531119590374E-15
tp 4.400782534289068E-13 -1.097317591166803E-12 1.386327302193787E-9 -1.080656895806514E-12 2.727756631873047E-10 -8.556220748561408E-13
node -5.855957320055909E-15 1.458308909846937E-14 -1.080656895806514E-12 1.944378486307768E-10 -1.876900105023489E-10 1.063331388723328E-11
peri 8.402562348866464E-14 -2.071303746197215E-13 2.727756631873047E-10 -1.876900105023489E-10 2.416029821976024E-10 -1.044951216002771E-11
i 4.62519505134144E-16 -1.018531119590374E-15 -8.556220748561408E-13 1.063331388723328E-11 -1.044951216002771E-11 1.443693504022064E-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. 2020-October); 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.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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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