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JPL Small-Body Database Browser
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27031 (1998 RO4)
Classification: Amor [NEO]          SPK-ID: 2027031
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 61 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4253256999013137 5.1352e-08  
a 2.139442014337145 7.6794e-09 au
q 1.229482342190922 1.0836e-07 au
i 5.354755885266306 6.0104e-06 deg
node 191.89321024 6.1908e-05 deg
peri 111.7658067883814 6.3269e-05 deg
M 232.8666344063952 2.0479e-05 deg
tp 2459004.151202517752
(2020-Jun-03.65120252)
6.7003e-05 TDB
period 1143.007834551503
3.13
6.1541e-06
1.685e-08
d
yr
n .3149584710775478 1.6958e-09 deg/d
Q 3.049401686483367 1.0946e-08 au
  Orbit Determination Parameters
   # obs. used (total)      224  
   data-arc span      24225 days (66.32 yr)  
   first obs. used      1951-08-26  
   last obs. used      2017-12-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55767  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Feb-09 06:29:04  

Additional Information
 Earth MOID = .234289 au 
 Jupiter MOID = 2.2512 au 
 T_jup = 3.588 
[ 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 17.7   n/a MPO435951  

27031 (1998 RO4)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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