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181845 (1998 TS31)
Classification: Main-belt Asteroid          SPK-ID: 2181845
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1770957223421157 3.7846e-08  
a 2.453314680450413 1.2547e-08 au
q 2.01884314498353 9.6775e-08 au
i 6.890595482459283 4.0284e-06 deg
node 170.9015649861253 3.0045e-05 deg
peri 229.3855188569633 3.2358e-05 deg
M 269.7523587292402 1.395e-05 deg
tp 2459552.353335552072
(2021-Dec-03.85333555)
5.5899e-05 TDB
period 1403.551372813399
3.84
1.0767e-05
2.948e-08
d
yr
n .2564922146585807 1.9677e-09 deg/d
Q 2.887786215917296 1.4769e-08 au
  Orbit Determination Parameters
   # obs. used (total)      511  
   data-arc span      7977 days (21.84 yr)  
   first obs. used      1998-10-11  
   last obs. used      2020-08-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58088  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:17  

Additional Information
 Earth MOID = 1.03286 au 
 Jupiter MOID = 2.54849 au 
 T_jup = 3.463 
[ 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 16.45   n/a E2021B55  

181845 (1998 TS31)          Discovered 1998-Oct-11 by LONEOS at Anderson Mesa
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

Alternate Designations
 1998 TS31 = 2002 XR 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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