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330820 (2008 WH62)
Classification: Main-belt Asteroid          SPK-ID: 2330820
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2100750225327324 5.8471e-08  
a 3.118555879659416 3.2807e-08 au
q 2.463425182970379 1.7889e-07 au
i 20.53843271161806 8.3577e-06 deg
node 243.7763359337589 1.7171e-05 deg
peri 107.4701684615876 2.5905e-05 deg
M 90.18847410896451 1.9717e-05 deg
tp 2458496.561822742670
(2019-Jan-13.06182274)
0.00010707 TDB
period 2011.540228449284
5.51
3.1742e-05
8.69e-08
d
yr
n .1789673380171609 2.8241e-09 deg/d
Q 3.773686576348453 3.9699e-08 au
  Orbit Determination Parameters
   # obs. used (total)      273  
   data-arc span      6416 days (17.57 yr)  
   first obs. used      2002-09-16  
   last obs. used      2020-04-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50982  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 17:43:11  

Additional Information
 Earth MOID = 1.54934 au 
 Jupiter MOID = 2.08772 au 
 T_jup = 3.086 
[ 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 15.3   n/a MPO271138  
diameter diameter 6.725 km 3.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 91.363 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 0.036   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

330820 (2008 WH62)          Discovered 2008-Nov-24 by Lowe, A. at Mayhill
Reference: 20120604/Numbers.arcLast Updated: 2012-06-06
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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