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85634 (1998 LR2)
Classification: Main-belt Asteroid          SPK-ID: 2085634
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2131850205470867 2.9355e-08  
a 2.265914744465264 8.1018e-09 au
q 1.78285566310849 6.6392e-08 au
i 6.022966145435832 3.451e-06 deg
node 137.7557198618952 4.5777e-05 deg
peri 167.2860759203863 4.7384e-05 deg
M 131.7067118272284 1.3809e-05 deg
tp 2458544.705393734382
(2019-Mar-02.20539373)
4.6399e-05 TDB
period 1245.844315594706
3.41
6.6818e-06
1.829e-08
d
yr
n .2889606634583016 1.5498e-09 deg/d
Q 2.748973825822037 9.829e-09 au
  Orbit Determination Parameters
   # obs. used (total)      615  
   data-arc span      8425 days (23.07 yr)  
   first obs. used      1997-01-02  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55555  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:36:05  

Additional Information
 Earth MOID = .768447 au 
 Jupiter MOID = 2.50572 au 
 T_jup = 3.579 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457184.5 (2015-Jun-11.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2134318196974713 2.9282e-08  
q 1.781930520041856 6.6205e-08 au
tp 2457299.760346618501
(2015-Oct-04.26034662)
4.3113e-05 TDB
node 137.7963783287496 4.578e-05 deg
peri 167.3920024122687 4.7387e-05 deg
i 6.023201165495749 3.4513e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      615  
   data-arc span      8425 days (23.07 yr)  
   first obs. used      1997-01-02  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55555  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:36:05  

Additional Information
 Jupiter MOID = 2.50572 au 
 T_jup = 3.579 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.574280257936214E-16 -1.929728070589779E-15 -1.432295540235999E-13 -1.192198349518242E-14 -2.561114366274454E-14 -9.796719171289518E-16
q -1.929728070589779E-15 4.383091817041782E-15 4.41522987016564E-13 3.086432403156442E-14 8.887774425648906E-14 2.263008360928039E-15
tp -1.432295540235999E-13 4.41522987016564E-13 1.858693841431696E-9 4.420012216457657E-11 5.535696295505094E-10 1.477123872401261E-12
node -1.192198349518242E-14 3.086432403156442E-14 4.420012216457657E-11 2.095782969435262E-9 -2.070159451644755E-9 3.760498414471751E-12
peri -2.561114366274454E-14 8.887774425648906E-14 5.535696295505094E-10 -2.070159451644755E-9 2.245574291796802E-9 -3.270096074261505E-12
i -9.796719171289518E-16 2.263008360928039E-15 1.477123872401261E-12 3.760498414471751E-12 -3.270096074261505E-12 1.191126913042575E-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 16.1   n/a MPO436374  

85634 (1998 LR2)          Discovered 1998-Jun-01 by Elst, E. W. at La Silla
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 LR2 = 2001 FC113 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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