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187778 (1998 SJ88)
Classification: Main-belt Asteroid          SPK-ID: 2187778
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2547188528256568 3.6769e-08  
a 2.28999329121138 7.888e-09 au
q 1.706688827095567 8.2375e-08 au
i 6.12395839031293 3.9294e-06 deg
node 154.0794271753875 5.7179e-05 deg
peri 179.763011251581 5.8811e-05 deg
M 162.8631140053939 1.7418e-05 deg
tp 2458627.875434089778
(2019-May-24.37543409)
5.9157e-05 TDB
period 1265.755263164455
3.47
6.54e-06
1.791e-08
d
yr
n .2844151713025321 1.4695e-09 deg/d
Q 2.873297755327193 9.8973e-09 au
  Orbit Determination Parameters
   # obs. used (total)      367  
   data-arc span      8210 days (22.48 yr)  
   first obs. used      1998-08-27  
   last obs. used      2021-02-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56792  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:56:48  

Additional Information
 Earth MOID = .694731 au 
 Jupiter MOID = 2.51031 au 
 T_jup = 3.548 
[ 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 17.2   n/a MPO245292  

187778 (1998 SJ88)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

Alternate Designations
 1998 SJ88 = 2005 SW125 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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