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120424 (2099 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2120424
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2036791186435759 6.2346e-08  
a 2.737485854558215 1.5788e-08 au
q 2.179917148402542 1.6591e-07 au
i 10.70025753199177 5.1999e-06 deg
node 2.265504914971883 2.9085e-05 deg
peri 59.92333142414212 3.6788e-05 deg
M 70.39332542173879 1.6416e-05 deg
tp 2458677.014190748835
(2019-Jul-12.51419075)
7.5347e-05 TDB
period 1654.345644742845
4.53
1.4312e-05
3.918e-08
d
yr
n .2176086969153047 1.8826e-09 deg/d
Q 3.295054560713889 1.9004e-08 au
  Orbit Determination Parameters
   # obs. used (total)      497  
   data-arc span      17015 days (46.58 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-04-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54198  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 20:37:44  

Additional Information
 Earth MOID = 1.21417 au 
 Jupiter MOID = 2.18504 au 
 T_jup = 3.296 
[ 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 15.7   n/a MPO453675  

120424 (2099 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Alternate Designations
 2099 T-2 = 1998 HC158 = 2002 CG33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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