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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2131694257360826 3.0106e-08  
a 2.265437362081731 8.1924e-09 au
q 1.782515380565703 6.8281e-08 au
i 6.022863677212349 3.553e-06 deg
node 137.7619778815814 4.5882e-05 deg
peri 167.2135810743562 4.7488e-05 deg
M 16.1719442757048 1.3464e-05 deg
tp 2458544.551783037518
(2019-Mar-02.05178304)
4.6412e-05 TDB
period 1245.450625052661
3.41
6.7558e-06
1.85e-08
d
yr
n .2890520047591435 1.5679e-09 deg/d
Q 2.748359343597759 9.9388e-09 au
  Orbit Determination Parameters
   # obs. used (total)      603  
   data-arc span      8358 days (22.88 yr)  
   first obs. used      1997-01-02  
   last obs. used      2019-11-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56286  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 08:03:05  

Additional Information
 Earth MOID = .767314 au 
 Jupiter MOID = 2.50394 au 
 T_jup = 3.579 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457075.5 (2015-Feb-22.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2133737263932919 3.0041e-08  
q 1.781918953118172 6.8099e-08 au
tp 2457299.788917293205
(2015-Oct-04.28891729)
4.3138e-05 TDB
node 137.796847432087 4.588e-05 deg
peri 167.4021326186777 4.7487e-05 deg
i 6.023198798345774 3.5534e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      603  
   data-arc span      8358 days (22.88 yr)  
   first obs. used      1997-01-02  
   last obs. used      2019-11-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56286  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 08:03:05  

Additional Information
 Jupiter MOID = 2.50394 au 
 T_jup = 3.579 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.024768803610792E-16 -2.036766002478925E-15 -1.398839476773562E-13 -1.27382144710319E-14 -1.880053079534845E-14 -1.056980266458061E-15
q -2.036766002478925E-15 4.637530454287521E-15 4.335353570898757E-13 3.284926290231764E-14 7.256534318125017E-14 2.457344273849502E-15
tp -1.398839476773562E-13 4.335353570898757E-13 1.86087128484018E-9 4.541405883448293E-11 5.53492567205663E-10 1.879311959024207E-12
node -1.27382144710319E-14 3.284926290231764E-14 4.541405883448293E-11 2.104928749596041E-9 -2.078913253046512E-9 6.147235798047267E-12
peri -1.880053079534845E-14 7.256534318125017E-14 5.53492567205663E-10 -2.078913253046512E-9 2.254988007724912E-9 -5.510050612686993E-12
i -1.056980266458061E-15 2.457344273849502E-15 1.879311959024207E-12 6.147235798047267E-12 -5.510050612686993E-12 1.262651356007213E-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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