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100167 (1993 UN2)
Classification: Main-belt Asteroid          SPK-ID: 2100167
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1812855244454762 1.1799e-07  
a 2.567323296044053 1.5331e-08 au
q 2.101904745899618 3.0889e-07 au
i 3.44301940312604 7.8352e-06 deg
node 312.1383680048633 7.7826e-05 deg
peri 191.1940570534497 7.9012e-05 deg
M 135.5783590354345 1.4702e-05 deg
tp 2458634.642415032787
(2019-May-31.14241503)
5.808e-05 TDB
period 1502.516567079528
4.11
1.3458e-05
3.685e-08
d
yr
n .2395980236675455 2.1461e-09 deg/d
Q 3.032741846188488 1.811e-08 au
  Orbit Determination Parameters
   # obs. used (total)      592  
   data-arc span      9267 days (25.37 yr)  
   first obs. used      1993-10-21  
   last obs. used      2019-03-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53878  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:30:55  

Additional Information
 Earth MOID = 1.11448 au 
 Jupiter MOID = 1.98928 au 
 T_jup = 3.406 
[ 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 16.1   n/a MPO417504  

100167 (1993 UN2)          Discovered 1993-Oct-21 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1993 UN2 = 1997 WC17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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