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136901 (1998 HT49)
Classification: Main-belt Asteroid          SPK-ID: 2136901
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2584037258785107 4.1452e-08  
a 2.355639529114436 9.4768e-09 au
q 1.746933497964566 9.9909e-08 au
i 10.19707787205993 4.3149e-06 deg
node 105.505760716336 2.1453e-05 deg
peri 211.7653453057138 2.2999e-05 deg
M 337.5586475587089 6.6118e-06 deg
tp 2459082.820538490701
(2020-Aug-21.32053849)
2.4166e-05 TDB
period 1320.570760348851
3.62
7.9691e-06
2.182e-08
d
yr
n .2726093980037086 1.6451e-09 deg/d
Q 2.964345560264307 1.1926e-08 au
  Orbit Determination Parameters
   # obs. used (total)      493  
   data-arc span      8140 days (22.29 yr)  
   first obs. used      1998-04-24  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5574  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 11:04:14  

Additional Information
 Earth MOID = .741772 au 
 Jupiter MOID = 2.35289 au 
 T_jup = 3.488 
[ 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 16.1   n/a MPO432830  

136901 (1998 HT49)          Discovered 1998-Apr-25 by Spacewatch at Kitt Peak
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

Alternate Designations
 1998 HT49 = 2005 GA112 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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