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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2186589782800243 4.7015e-08  
a 2.233314229042859 6.679e-09 au
q 1.744980021542108 1.0446e-07 au
i 5.634278589145319 5.4636e-06 deg
node 163.76605109012 3.7875e-05 deg
peri 204.0905648194515 4.0254e-05 deg
M 131.5009521086322 1.28e-05 deg
tp 2458555.203201462727
(2019-Mar-12.70320146)
4.2448e-05 TDB
period 1219.054652478787
3.34
5.4686e-06
1.497e-08
d
yr
n .2953107961714328 1.3247e-09 deg/d
Q 2.721648436543611 8.1394e-09 au
  Orbit Determination Parameters
   # obs. used (total)      639  
   data-arc span      9008 days (24.66 yr)  
   first obs. used      1995-07-26  
   last obs. used      2020-03-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53014  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:06:42  

Additional Information
 Earth MOID = .745268 au 
 Jupiter MOID = 2.73992 au 
 T_jup = 3.602 
[ 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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