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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1635421124680391 4.0952e-08  
a 2.170989070236321 9.0307e-09 au
q 1.815940931544849 9.2928e-08 au
i 2.126512063367872 3.6983e-06 deg
node 283.4937994909278 0.00010333 deg
peri 39.68853340002135 0.00010386 deg
M 357.2537791117462 1.1753e-05 deg
tp 2459209.412875657624
(2020-Dec-25.91287566)
3.817e-05 TDB
period 1168.382066595159
3.20
7.2902e-06
1.996e-08
d
yr
n .3081183889180138 1.9225e-09 deg/d
Q 2.526037208927793 1.0508e-08 au
  Orbit Determination Parameters
   # obs. used (total)      550  
   data-arc span      8534 days (23.36 yr)  
   first obs. used      1997-03-03  
   last obs. used      2020-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54891  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:54:08  

Additional Information
 Earth MOID = .802165 au 
 Jupiter MOID = 2.77311 au 
 T_jup = 3.670 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457172.5 (2015-May-30.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1637441935971174 4.1041e-08  
q 1.814939565707371 9.3057e-08 au
tp 2456872.419051632987
(2014-Aug-02.91905163)
3.4251e-05 TDB
node 283.6160991135569 0.00010321 deg
peri 39.43502315709591 0.00010373 deg
i 2.128152155460616 3.7008e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      550  
   data-arc span      8534 days (23.36 yr)  
   first obs. used      1997-03-03  
   last obs. used      2020-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54891  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:54:08  

Additional Information
 Jupiter MOID = 2.77311 au 
 T_jup = 3.670 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.68436730224814E-15 -3.809862696491307E-15 1.174628935746764E-13 -5.056155421813747E-15 4.246152857785934E-14 -1.241772954904216E-15
q -3.809862696491307E-15 8.659550876752059E-15 -2.377611899002629E-13 1.270029178323671E-14 -8.605054383073111E-14 2.896867254624621E-15
tp 1.174628935746764E-13 -2.377611899002629E-13 1.173132668193041E-9 8.452313100724899E-12 3.69858968028559E-10 1.065120653632653E-14
node -5.056155421813747E-15 1.270029178323671E-14 8.452313100724899E-12 1.065212580809707E-8 -1.064159326418325E-8 6.420369901487444E-11
peri 4.246152857785934E-14 -8.605054383073111E-14 3.69858968028559E-10 -1.064159326418325E-8 1.07606201198927E-8 -6.415289895265755E-11
i -1.241772954904216E-15 2.896867254624621E-15 1.065120653632653E-14 6.420369901487444E-11 -6.415289895265755E-11 1.369579105742113E-11

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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