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120870 (1998 RM16)
Classification: Main-belt Asteroid          SPK-ID: 2120870
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1635421138070827 4.0101e-08  
a 2.1709890709885 8.903e-09 au
q 1.815940929266966 9.0902e-08 au
i 2.126512070481966 3.6983e-06 deg
node 283.4938081163548 0.00010092 deg
peri 39.68852554965298 0.00010144 deg
M 357.2537784339769 1.1705e-05 deg
tp 2459209.412877861960
(2020-Dec-25.91287786)
3.8013e-05 TDB
period 1168.38206720237
3.20
7.1871e-06
1.968e-08
d
yr
n .308118388757884 1.8953e-09 deg/d
Q 2.526037212710034 1.0359e-08 au
  Orbit Determination Parameters
   # obs. used (total)      554  
   data-arc span      8534 days (23.36 yr)  
   first obs. used      1997-03-03  
   last obs. used      2020-07-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54715  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:31  

Additional Information
 Earth MOID = .802165 au 
 Jupiter MOID = 2.77311 au 
 T_jup = 3.670 
[ 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 16.93   n/a E2021B55  

120870 (1998 RM16)          Discovered 1998-Sep-11 by ODAS at Caussols
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1998 RM16 = 1997 EC29 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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