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52181 (3112 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2052181
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2080722854676608 3.9686e-08  
a 2.594639196978386 1.1371e-08 au
q 2.054766689299117 1.0195e-07 au
i 7.870032343747979 4.8214e-06 deg
node 20.86756349987201 2.3298e-05 deg
peri 315.5245894669943 2.5491e-05 deg
M 127.0924244371622 1.0359e-05 deg
tp 2458661.571622035806
(2019-Jun-27.07162204)
4.3386e-05 TDB
period 1526.560036338243
4.18
1.0035e-05
2.747e-08
d
yr
n .235824331458022 1.5502e-09 deg/d
Q 3.134511704657655 1.3737e-08 au
  Orbit Determination Parameters
   # obs. used (total)      814  
   data-arc span      17339 days (47.47 yr)  
   first obs. used      1973-09-19  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45497  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 10:43:27  

Additional Information
 Earth MOID = 1.05285 au 
 Jupiter MOID = 2.28778 au 
 T_jup = 3.374 
[ 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 15.78   n/a MPCxxxxx  

52181 (3112 T-2)          Discovered 1973-Sep-30 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 3112 T-2 = 1998 RM40 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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