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101121 (1998 RO54)
Classification: Main-belt Asteroid          SPK-ID: 2101121
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1496081225466393 3.9165e-08  
a 2.263998353640109 7.4073e-09 au
q 1.92528581050333 8.8514e-08 au
i 3.779563861464402 3.1625e-06 deg
node 250.3342796574026 6.5386e-05 deg
peri 131.5483210602143 6.6621e-05 deg
M 173.6380915826907 1.3091e-05 deg
tp 2458600.356522958822
(2019-Apr-26.85652296)
4.4289e-05 TDB
period 1244.264145992039
3.41
6.1065e-06
1.672e-08
d
yr
n .2893276328499972 1.4199e-09 deg/d
Q 2.602710896776887 8.5155e-09 au
  Orbit Determination Parameters
   # obs. used (total)      909  
   data-arc span      8236 days (22.55 yr)  
   first obs. used      1998-08-27  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48954  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:35:18  

Additional Information
 Earth MOID = .929662 au 
 Jupiter MOID = 2.85773 au 
 T_jup = 3.600 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.76   n/a E2021B55  

101121 (1998 RO54)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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