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117998 (1095 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2117998
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1078510165447016 6.3095e-08  
a 2.580727917967048 1.6722e-08 au
q 2.30239378858901 1.5277e-07 au
i 7.828325767746986 5.0072e-06 deg
node 183.0689311917167 3.6073e-05 deg
peri 159.2783694684005 4.5699e-05 deg
M 110.1085141552658 3.1506e-05 deg
tp 2458537.340945991374
(2019-Feb-22.84094599)
0.00012989 TDB
period 1514.299422912805
4.15
1.4718e-05
4.03e-08
d
yr
n .2377336968850771 2.3106e-09 deg/d
Q 2.859062047345085 1.8525e-08 au
  Orbit Determination Parameters
   # obs. used (total)      516  
   data-arc span      16931 days (46.35 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51019  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 05:52:45  

Additional Information
 Earth MOID = 1.29674 au 
 Jupiter MOID = 2.54303 au 
 T_jup = 3.403 
[ 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 15.9   n/a MPO502792  

117998 (1095 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1095 T-2 = 2001 HE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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