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JPL Small-Body Database Browser
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85620 (1998 HJ107)
Classification: Main-belt Asteroid          SPK-ID: 2085620
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1295027362980926 4.6275e-08  
a 3.18890506741484 2.6477e-08 au
q 2.775933135389765 1.4812e-07 au
i 6.703833132281344 4.1159e-06 deg
node 121.5284372153015 6.3047e-05 deg
peri 22.95713948250321 6.7913e-05 deg
M 300.4136448055373 2.6399e-05 deg
tp 2458944.774719546961
(2020-Apr-05.27471955)
0.00015391 TDB
period 2079.987920597353
5.69
2.5905e-05
7.092e-08
d
yr
n .1730779282105693 2.1556e-09 deg/d
Q 3.601876999439916 2.9906e-08 au
  Orbit Determination Parameters
   # obs. used (total)      656  
   data-arc span      7889 days (21.60 yr)  
   first obs. used      1998-03-24  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59355  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:12:47  

Additional Information
 Earth MOID = 1.79048 au 
 Jupiter MOID = 1.42511 au 
 T_jup = 3.174 
[ show covariance matrix ]

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 14.2   n/a MPO426530  
diameter diameter 7.709 km 0.297 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.771 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 0.075   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85620 (1998 HJ107)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 HJ107 = 2001 UZ46 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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