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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .210074986627977 6.464e-08  
a 3.118555897720517 3.519e-08 au
q 2.463425309208281 2.0302e-07 au
i 20.53843285807313 8.6697e-06 deg
node 243.7763322577082 1.9862e-05 deg
peri 107.4701663766748 2.7886e-05 deg
M 90.18847666503478 1.9753e-05 deg
tp 2458496.561804082508
(2019-Jan-13.06180408)
0.00010717 TDB
period 2011.540245924022
5.51
3.4047e-05
9.322e-08
d
yr
n .1789673364624282 3.0292e-09 deg/d
Q 3.773686486232754 4.2582e-08 au
  Orbit Determination Parameters
   # obs. used (total)      250  
   data-arc span      6290 days (17.22 yr)  
   first obs. used      2002-09-16  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53083  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 19:44:45  

Additional Information
 Earth MOID = 1.54934 au 
 Jupiter MOID = 2.08772 au 
 T_jup = 3.086 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457336.5 (2015-Nov-10.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2092591406412034 6.4277e-08  
q 2.469502802537569 2.0096e-07 au
tp 2456476.997764610685
(2013-Jul-03.49776461)
9.9758e-05 TDB
node 244.1019675962769 1.9963e-05 deg
peri 106.3558415657183 2.7949e-05 deg
i 20.46501991476365 8.6603e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      250  
   data-arc span      6290 days (17.22 yr)  
   first obs. used      2002-09-16  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53083  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 19:44:45  

Additional Information
 Jupiter MOID = 2.08772 au 
 T_jup = 3.086 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.131472641635631E-15 -1.278766590313166E-14 1.853037150555711E-12 -9.558233064946447E-15 3.559714874312635E-13 -2.587029199801286E-15
q -1.278766590313166E-14 4.0384041375674E-14 -5.501463498955429E-12 4.000679781456963E-14 -1.001960371172241E-12 3.686103738623105E-15
tp 1.853037150555711E-12 -5.501463498955429E-12 9.951574517531465E-9 -2.281833663793997E-11 1.998000462583503E-9 -5.524773107267074E-13
node -9.558233064946447E-15 4.000679781456963E-14 -2.281833663793997E-11 3.985039973251011E-10 -3.77007272866407E-10 -4.762889278189185E-11
peri 3.559714874312635E-13 -1.001960371172241E-12 1.998000462583503E-9 -3.77007272866407E-10 7.811292130343471E-10 4.365634686979088E-11
i -2.587029199801286E-15 3.686103738623105E-15 -5.524773107267074E-13 -4.762889278189185E-11 4.365634686979088E-11 7.500162786318714E-11

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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