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85662 (1998 QL41)
Classification: Main-belt Asteroid          SPK-ID: 2085662
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .275472428447811 3.8508e-08  
a 2.66003401117845 1.5463e-08 au
q 1.927267982365351 1.0036e-07 au
i 12.19771672523 9.199e-06 deg
node 336.5047334951764 2.0195e-05 deg
peri 71.23045448834226 2.7261e-05 deg
M 323.4900007058968 1.5876e-05 deg
tp 2459161.208384336888
(2020-Nov-07.70838434)
7.019e-05 TDB
period 1584.634880303166
4.34
1.3817e-05
3.783e-08
d
yr
n .2271816709797062 1.9809e-09 deg/d
Q 3.392800039991549 1.9722e-08 au
  Orbit Determination Parameters
   # obs. used (total)      682  
   data-arc span      8039 days (22.01 yr)  
   first obs. used      1998-08-01  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50501  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:56:33  

Additional Information
 Earth MOID = .975322 au 
 Jupiter MOID = 2.2239 au 
 T_jup = 3.300 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456304.5 (2013-Jan-12.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2782358186171826 3.9615e-08  
q 1.918428261436935 1.0404e-07 au
tp 2455988.310349257515
(2012-Mar-01.81034926)
6.474e-05 TDB
node 336.9739392396002 2.0195e-05 deg
peri 70.10624021486109 2.7006e-05 deg
i 12.21376577136949 9.2025e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      682  
   data-arc span      8039 days (22.01 yr)  
   first obs. used      1998-08-01  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50501  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:56:33  

Additional Information
 Jupiter MOID = 2.2239 au 
 T_jup = 3.300 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.569375292844774E-15 -4.100331959733386E-15 -1.034422347666447E-12 8.471841578551089E-15 -3.098746884518396E-13 5.618363299421541E-15
q -4.100331959733386E-15 1.082475455183796E-14 2.720132344945912E-12 -2.355587418218004E-14 8.187534492873925E-13 -1.158616226727441E-14
tp -1.034422347666447E-12 2.720132344945912E-12 4.191286773869337E-9 -4.404850547390958E-11 1.168021142539595E-9 -1.079637718526598E-11
node 8.471841578551089E-15 -2.355587418218004E-14 -4.404850547390958E-11 4.078466533437486E-10 -4.096062635219244E-10 -2.011778349614104E-11
peri -3.098746884518396E-13 8.187534492873925E-13 1.168021142539595E-9 -4.096062635219244E-10 7.293065398802022E-10 1.683128118010021E-11
i 5.618363299421541E-15 -1.158616226727441E-14 -1.079637718526598E-11 -2.011778349614104E-11 1.683128118010021E-11 8.46853164354974E-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 14.8   n/a MPO439615  

85662 (1998 QL41)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1998 QL41 = 2000 DC57 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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