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120881 (1998 RG45)
Classification: Main-belt Asteroid          SPK-ID: 2120881
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1285365010487308 3.8639e-08  
a 2.779939393842697 1.5617e-08 au
q 2.422615711030627 1.1253e-07 au
i 9.136127414885951 7.2118e-06 deg
node 179.1872446969486 2.8815e-05 deg
peri 96.87596458781442 4.1732e-05 deg
M 353.6259037192833 3.0895e-05 deg
tp 2459230.475575999687
(2021-Jan-15.97557600)
0.00014536 TDB
period 1692.978405822555
4.64
1.4266e-05
3.906e-08
d
yr
n .2126429957770722 1.7919e-09 deg/d
Q 3.137263076654767 1.7625e-08 au
  Orbit Determination Parameters
   # obs. used (total)      771  
   data-arc span      11218 days (30.71 yr)  
   first obs. used      1989-10-07  
   last obs. used      2020-06-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58871  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:34  

Additional Information
 Earth MOID = 1.42604 au 
 Jupiter MOID = 2.03317 au 
 T_jup = 3.303 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457260.5 (2015-Aug-26.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1273482344281297 3.8822e-08  
q 2.425937507828655 1.1311e-07 au
tp 2457535.776156889382
(2016-May-27.27615689)
0.00014274 TDB
node 179.2161209962255 2.8815e-05 deg
peri 96.51614294933096 4.1873e-05 deg
i 9.135312776155338 7.2119e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      771  
   data-arc span      11218 days (30.71 yr)  
   first obs. used      1989-10-07  
   last obs. used      2020-06-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58871  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:34  

Additional Information
 Jupiter MOID = 2.03317 au 
 T_jup = 3.303 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.507160709449827E-15 -4.361840249723925E-15 -2.845969181664135E-12 6.966339572491078E-15 -5.87965953245596E-13 1.982020869741488E-16
q -4.361840249723925E-15 1.279479226320109E-14 8.319867568650266E-12 -1.947483001447841E-14 1.711261067791124E-12 1.306577496274163E-16
tp -2.845969181664135E-12 8.319867568650266E-12 2.03755125789511E-8 -4.389933286266695E-11 4.363545336195258E-9 -2.114118974907048E-12
node 6.966339572491078E-15 -1.947483001447841E-14 -4.389933286266695E-11 8.303163447930812E-10 -8.282856453143669E-10 1.170156020186606E-10
peri -5.87965953245596E-13 1.711261067791124E-12 4.363545336195258E-9 -8.282856453143669E-10 1.753377420072155E-9 -1.159227523571929E-10
i 1.982020869741488E-16 1.306577496274163E-16 -2.114118974907048E-12 1.170156020186606E-10 -1.159227523571929E-10 5.201178021469054E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   n/a MPO436584  

120881 (1998 RG45)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

Alternate Designations
 1998 RG45 = 1989 TF5 = 2003 UZ90 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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