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212995 (1230 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2212995
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2295480163590802 4.8726e-08  
a 2.225543271884115 9.5593e-09 au
q 1.714674228501819 1.1214e-07 au
i 2.771839639173882 5.9487e-06 deg
node 17.110714891987 0.00011165 deg
peri 299.3819392492542 0.00011256 deg
M 49.95042438370692 1.3707e-05 deg
tp 2458832.236788874257
(2019-Dec-14.73678887)
4.5764e-05 TDB
period 1212.697524648578
3.32
7.8133e-06
2.139e-08
d
yr
n .2968588561309407 1.9126e-09 deg/d
Q 2.736412315266411 1.1754e-08 au
  Orbit Determination Parameters
   # obs. used (total)      271  
   data-arc span      16699 days (45.72 yr)  
   first obs. used      1973-09-19  
   last obs. used      2019-06-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61197  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 02:53:24  

Additional Information
 Earth MOID = .703426 au 
 Jupiter MOID = 2.56797 au 
 T_jup = 3.610 
[ 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 17.3   n/a MPO475751  

212995 (1230 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

[ show close-approach data ]
Alternate Designations
 1230 T-2 = 2003 SY204 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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