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120884 (1998 RY50)
Classification: Main-belt Asteroid          SPK-ID: 2120884
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 .08086938140349212 4.3212e-08  
a 3.082440156784819 2.2677e-08 au
q 2.833165128092347 1.4163e-07 au
i 9.675663156517874 5.2722e-06 deg
node 341.70022867796 2.2702e-05 deg
peri 80.13144994565809 4.3698e-05 deg
M 343.6013325929461 3.4357e-05 deg
tp 2459290.542276098526
(2021-Mar-17.04227610)
0.00018841 TDB
period 1976.698385963105
5.41
2.1813e-05
5.972e-08
d
yr
n .1821218667230294 2.0098e-09 deg/d
Q 3.33171518547729 2.4511e-08 au
  Orbit Determination Parameters
   # obs. used (total)      790  
   data-arc span      8160 days (22.34 yr)  
   first obs. used      1998-09-14  
   last obs. used      2021-01-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48995  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:35  

Additional Information
 Earth MOID = 1.8654 au 
 Jupiter MOID = 1.93909 au 
 T_jup = 3.201 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457672.5 (2016-Oct-11.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07915941352784163 4.242e-08  
q 2.839530254739976 1.3791e-07 au
tp 2457293.671531918002
(2015-Sep-28.17153192)
0.00020183 TDB
node 342.0538975065812 2.2602e-05 deg
peri 76.68801218649078 4.4863e-05 deg
i 9.696593550831546 5.2826e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      790  
   data-arc span      8160 days (22.34 yr)  
   first obs. used      1998-09-14  
   last obs. used      2021-01-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48995  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:35  

Additional Information
 Jupiter MOID = 1.93909 au 
 T_jup = 3.201 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.79947636871674E-15 -5.791138359743214E-15 1.145518058630005E-13 7.583549706014806E-15 9.006564691795882E-14 -4.119171091628394E-15
q -5.791138359743214E-15 1.901958288898819E-14 -1.601725228700738E-12 -2.426583055802436E-14 -5.104970674802063E-13 1.487265984544864E-14
tp 1.145518058630005E-13 -1.601725228700738E-12 4.073382006634054E-8 5.066266017966986E-12 7.829194522594555E-9 1.960456557615496E-11
node 7.583549706014806E-15 -2.426583055802436E-14 5.066266017966986E-12 5.108568076527793E-10 -5.01658001091679E-10 2.496265663199372E-11
peri 9.006564691795882E-14 -5.104970674802063E-13 7.829194522594555E-9 -5.01658001091679E-10 2.012662702262968E-9 -2.110439783029012E-11
i -4.119171091628394E-15 1.487265984544864E-14 1.960456557615496E-11 2.496265663199372E-11 -2.110439783029012E-11 2.790600287319963E-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 14.7   n/a MPO449702  

120884 (1998 RY50)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1998 RY50 = 1999 XG202 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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