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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .10763249760861 6.357e-08  
a 2.580019404470299 1.7195e-08 au
q 2.302325472088482 1.5458e-07 au
i 7.829156195348472 5.7295e-06 deg
node 183.0787561187787 3.6458e-05 deg
peri 159.1616627335942 4.6244e-05 deg
M 15.1175227276336 3.1619e-05 deg
tp 2458536.936029885893
(2019-Feb-22.43602989)
0.00013257 TDB
period 1513.675861670781
4.14
1.5132e-05
4.143e-08
d
yr
n .2378316316695672 2.3776e-09 deg/d
Q 2.857713336852115 1.9046e-08 au
  Orbit Determination Parameters
   # obs. used (total)      460  
   data-arc span      16870 days (46.19 yr)  
   first obs. used      1973-09-19  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51906  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 11:04:00  

Additional Information
 Earth MOID = 1.29576 au 
 Jupiter MOID = 2.54137 au 
 T_jup = 3.404 
[ 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 15.8   n/a MPO453650  

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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