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120874 (1998 RM27)
Classification: Main-belt Asteroid          SPK-ID: 2120874
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09311552260342174 4.6663e-08  
a 3.070437282692803 2.3064e-08 au
q 2.784531910493833 1.444e-07 au
i 8.539427094667424 5.0732e-06 deg
node 317.5849156796208 3.3516e-05 deg
peri 78.80095444421833 4.6447e-05 deg
M 7.563139882968333 2.8826e-05 deg
tp 2459159.214418565002
(2020-Nov-05.71441856)
0.00015752 TDB
period 1965.163879894562
5.38
2.2142e-05
6.062e-08
d
yr
n .1831908288581587 2.0641e-09 deg/d
Q 3.356342654891773 2.5211e-08 au
  Orbit Determination Parameters
   # obs. used (total)      677  
   data-arc span      8153 days (22.32 yr)  
   first obs. used      1998-09-14  
   last obs. used      2021-01-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54241  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 09:26:05  

Additional Information
 Earth MOID = 1.80603 au 
 Jupiter MOID = 2.04745 au 
 T_jup = 3.207 
[ 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 14.91   n/a E2021B55  

120874 (1998 RM27)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1998 RM27 = 2004 TS173 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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