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100345 (1995 ST61)
Classification: Main-belt Asteroid          SPK-ID: 2100345
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2189946777594396 4.0668e-08  
a 2.232743924743498 6.5954e-09 au
q 1.74378488842495 9.0629e-08 au
i 5.635131873491582 4.9096e-06 deg
node 163.7693394157932 3.6186e-05 deg
peri 204.0855418684343 3.8021e-05 deg
M 248.4745384442768 1.2103e-05 deg
tp 2459774.009886627003
(2022-Jul-13.50988663)
4.1997e-05 TDB
period 1218.587731356909
3.34
5.3994e-06
1.478e-08
d
yr
n .2954239491637887 1.309e-09 deg/d
Q 2.721702961062047 8.0397e-09 au
  Orbit Determination Parameters
   # obs. used (total)      665  
   data-arc span      9450 days (25.87 yr)  
   first obs. used      1995-07-26  
   last obs. used      2021-06-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53454  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 09:00:55  

Additional Information
 Earth MOID = .743256 au 
 Jupiter MOID = 2.74157 au 
 T_jup = 3.603 
[ 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  

100345 (1995 ST61)          Discovered 1995-Sep-25 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1995 ST61 = 2002 TF261 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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