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102117 (1999 RW170)
Classification: Main-belt Asteroid          SPK-ID: 2102117
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2301903088301178 5.4731e-08  
a 2.59483540530701 1.054e-08 au
q 1.997529441996065 1.4368e-07 au
i 4.371062588006905 4.6068e-06 deg
node 158.4720448734742 6.7302e-05 deg
peri 226.7028273712181 6.7852e-05 deg
M 9.92147530014633 7.2705e-06 deg
tp 2459158.423761883093
(2020-Nov-04.92376188)
3.0858e-05 TDB
period 1526.733198828098
4.18
9.3025e-06
2.547e-08
d
yr
n .2357975841989495 1.4367e-09 deg/d
Q 3.192141368617955 1.2967e-08 au
  Orbit Determination Parameters
   # obs. used (total)      542  
   data-arc span      9215 days (25.23 yr)  
   first obs. used      1995-10-21  
   last obs. used      2021-01-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50371  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:30:35  

Additional Information
 Earth MOID = 1.003 au 
 Jupiter MOID = 2.26816 au 
 T_jup = 3.376 
[ 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 16.49   n/a E2021B55  

102117 (1999 RW170)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 RW170 = 1995 UN32 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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