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136955 (1998 RJ5)
Classification: Main-belt Asteroid          SPK-ID: 2136955
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1784015663047968 5.1157e-08  
a 2.42725314752199 9.9797e-09 au
q 1.994227384185819 1.2381e-07 au
i 9.171034804129262 6.2309e-06 deg
node 41.3409378066119 2.5405e-05 deg
peri 205.37824114 2.9064e-05 deg
M 2.58548425576814 1.4358e-05 deg
tp 2458990.580028304575
(2020-May-21.08002830)
5.508e-05 TDB
period 1381.246009286594
3.78
8.5186e-06
2.332e-08
d
yr
n .2606342371884485 1.6074e-09 deg/d
Q 2.860278910858161 1.176e-08 au
  Orbit Determination Parameters
   # obs. used (total)      678  
   data-arc span      7945 days (21.75 yr)  
   first obs. used      1998-09-15  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58021  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 02:32:01  

Additional Information
 Earth MOID = .985488 au 
 Jupiter MOID = 2.17176 au 
 T_jup = 3.471 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457017.5 (2014-Dec-26.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1789077269060606 5.1091e-08  
q 1.992519714036618 1.2378e-07 au
tp 2457608.277209048068
(2016-Aug-07.77720905)
5.4152e-05 TDB
node 41.40723113639916 2.5412e-05 deg
peri 205.17485766931 2.9032e-05 deg
i 9.170965298073888 6.2294e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      678  
   data-arc span      7945 days (21.75 yr)  
   first obs. used      1998-09-15  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58021  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 02:32:01  

Additional Information
 Jupiter MOID = 2.17176 au 
 T_jup = 3.471 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.610271182941434E-15 -6.310073982559341E-15 -1.561539819006342E-12 -2.418533433356005E-14 -3.381039589415052E-13 -3.976460418978993E-15
q -6.310073982559341E-15 1.532150715765315E-14 3.79205205229241E-12 5.879443317700301E-14 8.121575623555041E-13 9.570722245153078E-15
tp -1.561539819006342E-12 3.79205205229241E-12 2.93248940401389E-9 1.728730598807929E-11 7.677640809849995E-10 6.266889947104914E-12
node -2.418533433356005E-14 5.879443317700301E-14 1.728730598807929E-11 6.457682767123463E-10 -6.324379622467664E-10 -6.395995715616795E-11
peri -3.381039589415052E-13 8.121575623555041E-13 7.677640809849995E-10 -6.324379622467664E-10 8.428547476999352E-10 6.481526771931774E-11
i -3.976460418978993E-15 9.570722245153078E-15 6.266889947104914E-12 -6.395995715616795E-11 6.481526771931774E-11 3.88053860531133E-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 15.7   n/a MPO436676  

136955 (1998 RJ5)          Discovered 1998-Sep-15 by ODAS at Caussols
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

Alternate Designations
 1998 RJ5 = 2001 HY27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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