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46251 (2001 HO31)
Classification: Main-belt Asteroid          SPK-ID: 2046251
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05852735133372546 3.9567e-08  
a 3.048183521834287 2.0942e-08 au
q 2.869781413922219 1.2453e-07 au
i 10.18567473982809 4.5613e-06 deg
node 129.9154533368918 2.525e-05 deg
peri 279.59756533 4.7426e-05 deg
M 321.8375413469739 3.9544e-05 deg
tp 2458806.560115717127
(2019-Nov-19.06011572)
0.00021355 TDB
period 1943.838114116988
5.32
2.0032e-05
5.484e-08
d
yr
n .1852006076974853 1.9086e-09 deg/d
Q 3.226585629746355 2.2167e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1159  
   data-arc span      7626 days (20.88 yr)  
   first obs. used      1998-12-15  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51951  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:26:13  

Additional Information
 Earth MOID = 1.90282 au 
 Jupiter MOID = 2.01163 au 
 T_jup = 3.211 
[ 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 13.8   n/a MPO459171  
diameter diameter 6.922 km 0.202 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 14.542 h n/a LCDB (Rev. 2019-January); 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 0.147   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46251 (2001 HO31)          Discovered 2001-Apr-26 by Yeung, W. K. Y. at Desert Beaver
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2001 HO31 = 1998 XS80 = 2000 EA81 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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