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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 
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Orbital Elements at Epoch 2456826.5 (2014-Jun-18.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1839006061578732 3.5144e-08  
q 1.853541895099335 7.9148e-08 au
tp 2456203.719417484129
(2012-Oct-03.21941748)
5.3949e-05 TDB
node 350.1297089395708 3.586e-05 deg
peri 58.91912272383863 4.0061e-05 deg
i 6.312409471238769 5.3349e-06 deg
  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
 Jupiter MOID = 2.71692 au 
 T_jup = 3.582 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.235125826617601E-15 -2.773572941690499E-15 -4.139064332913393E-13 2.672244065149764E-15 -1.670306325944827E-13 -3.701794391389712E-15
q -2.773572941690499E-15 6.264476713724342E-15 9.833000376745564E-13 -5.665745711600106E-15 3.966147503266725E-13 8.125489521162117E-15
tp -4.139064332913393E-13 9.833000376745564E-13 2.910499181832892E-9 3.876647570948885E-13 9.719292353763612E-10 -3.929444940612343E-12
node 2.672244065149764E-15 -5.665745711600106E-15 3.876647570948885E-13 1.285935688354275E-9 -1.277297745275754E-9 -4.083251756395534E-11
peri -1.670306325944827E-13 3.966147503266725E-13 9.719292353763612E-10 -1.277297745275754E-9 1.604915649805341E-9 3.934690568399111E-11
i -3.701794391389712E-15 8.125489521162117E-15 -3.929444940612343E-12 -4.083251756395534E-11 3.934690568399111E-11 2.846136770468862E-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 15.6   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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