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56331 (1999 XD33)
Classification: Main-belt Asteroid          SPK-ID: 2056331
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1062145540844207 3.4683e-08  
a 2.302399709764017 8.0148e-09 au
q 2.057851351267332 8.1587e-08 au
i 10.59471219423583 4.0164e-06 deg
node 110.3782785907008 1.902e-05 deg
peri 257.17296746 2.7108e-05 deg
M 47.33284834615471 1.8403e-05 deg
tp 2458832.724072393245
(2019-Dec-15.22407239)
6.5342e-05 TDB
period 1276.055341033339
3.49
6.6631e-06
1.824e-08
d
yr
n .2821194257205765 1.4731e-09 deg/d
Q 2.546948068260702 8.8661e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1455  
   data-arc span      8128 days (22.25 yr)  
   first obs. used      1998-07-31  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50158  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:59:49  

Additional Information
 Earth MOID = 1.085 au 
 Jupiter MOID = 2.89102 au 
 T_jup = 3.560 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6   n/a MPO502530  
diameter diameter 5.169 km 0.165 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.646 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.115   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

56331 (1999 XD33)          Discovered 1999-Dec-06 by LINEAR at Socorro
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XD33 = 2000 AE47 = 2001 KZ43 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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