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181731 (1995 SD60)
Classification: Main-belt Asteroid          SPK-ID: 2181731
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2015645060151847 8.085e-08  
a 3.070377454517148 4.6131e-08 au
q 2.451498339617239 2.2346e-07 au
i 4.860352800693643 8.919e-06 deg
node 202.9016431358246 6.9298e-05 deg
peri 265.9157999822567 7.3971e-05 deg
M 191.4346150216061 2.8936e-05 deg
tp 2460120.635900089436
(2023-Jun-25.13590009)
0.00017272 TDB
period 1965.106442670037
5.38
4.4287e-05
1.213e-07
d
yr
n .1831961832616351 4.1286e-09 deg/d
Q 3.689256569417058 5.5429e-08 au
  Orbit Determination Parameters
   # obs. used (total)      172  
   data-arc span      8655 days (23.70 yr)  
   first obs. used      1995-09-19  
   last obs. used      2019-05-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5793  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:31:48  

Additional Information
 Earth MOID = 1.47398 au 
 Jupiter MOID = 1.50123 au 
 T_jup = 3.194 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.3   n/a MPO475532  

181731 (1995 SD60)          Discovered 1995-Sep-24 by Spacewatch at Kitt Peak
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ show close-approach data ]
Alternate Designations
 1995 SD60 = 2006 TK52 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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