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52865 (1998 SH22)
Classification: Main-belt Asteroid          SPK-ID: 2052865
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .184362677081589 3.5097e-08  
a 2.27126344072695 7.4367e-09 au
q 1.852527232436989 7.9035e-08 au
i 6.305632742606567 5.3314e-06 deg
node 350.0332958919911 3.5923e-05 deg
peri 59.35095364827535 4.006e-05 deg
M 84.76442535287623 1.6369e-05 deg
tp 2458706.118296720777
(2019-Aug-10.61829672)
5.6378e-05 TDB
period 1250.258144726798
3.42
6.1405e-06
1.681e-08
d
yr
n .2879405357352547 1.4142e-09 deg/d
Q 2.689999649016911 8.8078e-09 au
  Orbit Determination Parameters
   # obs. used (total)      989  
   data-arc span      14063 days (38.50 yr)  
   first obs. used      1981-10-24  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49852  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 10:28:20  

Additional Information
 Earth MOID = .871468 au 
 Jupiter MOID = 2.71692 au 
 T_jup = 3.582 
[ 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 15.6   n/a MPO359099  
diameter diameter 2.214 km 0.688 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.273   0.092 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52865 (1998 SH22)          Discovered 1998-Sep-23 by Visnjan at Visnjan
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 SH22 = 1981 UP27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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