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85244 (1993 QB9)
Classification: Main-belt Asteroid          SPK-ID: 2085244
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07034754073945179 4.3106e-08  
a 2.413648099265093 1.2401e-08 au
q 2.243853891271341 1.013e-07 au
i 6.570933414980803 5.6896e-06 deg
node 357.7553250788216 3.5397e-05 deg
peri 214.6947509256907 5.25e-05 deg
M 173.9032713809416 4.0086e-05 deg
tp 2458338.870888588511
(2018-Aug-08.37088859)
0.00015167 TDB
period 1369.649220608275
3.75
1.0556e-05
2.89e-08
d
yr
n .2628410213237813 2.0257e-09 deg/d
Q 2.583442307258844 1.3274e-08 au
  Orbit Determination Parameters
   # obs. used (total)      624  
   data-arc span      9936 days (27.20 yr)  
   first obs. used      1993-08-15  
   last obs. used      2020-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6056  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:01:35  

Additional Information
 Earth MOID = 1.24211 au 
 Jupiter MOID = 2.38863 au 
 T_jup = 3.506 
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Orbital Elements at Epoch 2457297.5 (2015-Oct-02.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0696680272487796 4.3101e-08  
q 2.246129158594707 1.012e-07 au
tp 2456970.178838985473
(2014-Nov-08.67883899)
0.00015212 TDB
node 357.8158869992612 3.5373e-05 deg
peri 215.0908492615003 5.2757e-05 deg
i 6.573128572202509 5.6904e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      624  
   data-arc span      9936 days (27.20 yr)  
   first obs. used      1993-08-15  
   last obs. used      2020-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6056  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:01:35  

Additional Information
 Jupiter MOID = 2.38863 au 
 T_jup = 3.506 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.857738871579226E-15 -4.335602254626452E-15 -1.862010935329201E-12 -9.193146302495269E-15 -4.941793383068697E-13 1.618799897099343E-15
q -4.335602254626452E-15 1.024096217555795E-14 4.609497275514969E-12 2.150865537995993E-14 1.224430053310098E-12 -3.81737262164428E-15
tp -1.862010935329201E-12 4.609497275514969E-12 2.31419590373621E-8 -7.108961835740618E-12 5.966546235565806E-9 -5.328513412279965E-12
node -9.193146302495269E-15 2.150865537995993E-14 -7.108961835740618E-12 1.251222593609872E-9 -1.244268790394118E-9 -4.307788964347676E-11
peri -4.941793383068697E-13 1.224430053310098E-12 5.966546235565806E-9 -1.244268790394118E-9 2.783295959414483E-9 4.14322016569794E-11
i 1.618799897099343E-15 -3.81737262164428E-15 -5.328513412279965E-12 -4.307788964347676E-11 4.14322016569794E-11 3.238024152909169E-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 15.8   n/a MPO502664  

85244 (1993 QB9)          Discovered 1993-Aug-20 by Elst, E. W. at La Silla
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1993 QB9 = 2001 VZ56 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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