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300262 (2007 HQ31)
Classification: Main-belt Asteroid          SPK-ID: 2300262
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09525546297082937 6.664e-08  
a 2.182246649022571 1.3551e-08 au
q 1.974375734153385 1.403e-07 au
i 3.60172567250159 5.4633e-06 deg
node 20.159405945937 9.0611e-05 deg
peri 216.9048296671396 0.00010898 deg
M 67.95833895784179 4.9027e-05 deg
tp 2458978.223047254978
(2020-May-08.72304726)
0.0001616 TDB
period 1177.481736830685
3.22
1.0968e-05
3.003e-08
d
yr
n .3057372260982813 2.8479e-09 deg/d
Q 2.390117563891757 1.4842e-08 au
  Orbit Determination Parameters
   # obs. used (total)      137  
   data-arc span      9039 days (24.75 yr)  
   first obs. used      1995-09-22  
   last obs. used      2020-06-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4553  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 05:34:09  

Additional Information
 Earth MOID = .962711 au 
 Jupiter MOID = 2.60113 au 
 T_jup = 3.671 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457168.5 (2015-May-26.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09524059896846906 6.6552e-08  
q 1.973698116341225 1.4003e-07 au
tp 2456623.942278916864
(2013-Nov-27.44227892)
0.00017554 TDB
node 20.20039324357984 9.0607e-05 deg
peri 216.8234678907462 0.00010901 deg
i 3.602607273188968 5.4632e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      137  
   data-arc span      9039 days (24.75 yr)  
   first obs. used      1995-09-22  
   last obs. used      2020-06-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4553  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 05:34:09  

Additional Information
 Jupiter MOID = 2.60113 au 
 T_jup = 3.671 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.42910948127219E-15 -9.291235144374485E-15 -6.866271165193056E-12 1.520414377786416E-13 -2.541395873437346E-12 -6.540759129596405E-16
q -9.291235144374485E-15 1.96081812415383E-14 1.352675342386598E-11 -3.153645398894769E-13 5.054920677022768E-12 2.351993582334738E-15
tp -6.866271165193056E-12 1.352675342386598E-11 3.081503678980275E-8 -3.211594608462956E-10 1.065869261360595E-8 -1.354240229663973E-11
node 1.520414377786416E-13 -3.153645398894769E-13 -3.211594608462956E-10 8.209576459921515E-9 -8.301795858519632E-9 -3.009212307057435E-12
peri -2.541395873437346E-12 5.054920677022768E-12 1.065869261360595E-8 -8.301795858519632E-9 1.188379032365369E-8 -1.295834259425399E-12
i -6.540759129596405E-16 2.351993582334738E-15 -1.354240229663973E-11 -3.009212307057435E-12 -1.295834259425399E-12 2.984627702202625E-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 18.22   n/a E2021B55  

300262 (2007 HQ31)          Discovered 2007-Apr-19 by Spacewatch at Kitt Peak
Reference: 20111012/Numbers.arcLast Updated: 2011-10-13

[ show close-approach data ]
Alternate Designations
 2007 HQ31 = 1995 SX81 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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