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8015 (1990 QT2)
Classification: Main-belt Asteroid          SPK-ID: 2008015
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1501176058905134 3.6523e-08  
a 2.244972726145444 6.439e-09 au
q 1.907962795206991 8.2488e-08 au
i .8203383534193294 4.7758e-06 deg
node 27.43767920816306 0.00022555 deg
peri 36.58023306024 0.00022605 deg
M 248.5200391543572 1.4976e-05 deg
tp 2459380.960292443064
(2021-Jun-15.46029244)
5.1687e-05 TDB
period 1228.612786015849
3.36
5.2858e-06
1.447e-08
d
yr
n .2930133920935413 1.2606e-09 deg/d
Q 2.581982657083898 7.4056e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2021  
   data-arc span      16181 days (44.30 yr)  
   first obs. used      1975-03-15  
   last obs. used      2019-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46064  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:43:40  

Additional Information
 Earth MOID = .921351 au 
 Jupiter MOID = 2.70472 au 
 T_jup = 3.616 
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Orbital Elements at Epoch 2456468.5 (2013-Jun-25.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1506254399732507 3.6629e-08  
q 1.906228927917432 8.2819e-08 au
tp 2456924.824531425135
(2014-Sep-24.32453143)
4.8251e-05 TDB
node 27.51691371305956 0.00022509 deg
peri 36.46913305115691 0.00022558 deg
i .8217459129983672 4.7776e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2021  
   data-arc span      16181 days (44.30 yr)  
   first obs. used      1975-03-15  
   last obs. used      2019-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46064  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:43:40  

Additional Information
 Jupiter MOID = 2.70472 au 
 T_jup = 3.616 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.34166406942255E-15 -3.027123589724517E-15 -7.90562412689375E-13 3.62212241770135E-15 -2.662917502305303E-13 -5.271213476457049E-17
q -3.027123589724517E-15 6.858912044422547E-15 1.822120352388E-12 -9.11291811272087E-15 6.088754114844988E-13 1.400346502324368E-16
tp -7.90562412689375E-13 1.822120352388E-12 2.328188756852018E-9 -6.020762103013981E-12 7.216406554962921E-10 -1.771151639632525E-13
node 3.62212241770135E-15 -9.11291811272087E-15 -6.020762103013981E-12 5.066538227802074E-8 -5.06613995086012E-8 -1.924695439606228E-10
peri -2.662917502305303E-13 6.088754114844988E-13 7.216406554962921E-10 -5.06613995086012E-8 5.088584646464396E-8 1.923921086524495E-10
i -5.271213476457049E-17 1.400346502324368E-16 -1.771151639632525E-13 -1.924695439606228E-10 1.923921086524495E-10 2.282500466331206E-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 14.4   n/a MPO384827  
diameter diameter 3.105 km 0.878 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.318   0.153 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8015 (1990 QT2)          Discovered 1990-Aug-24 by Holt, H. E. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1990 QT2 = 1975 EF6 = 1980 TC8 = 1985 DS3 = 1987 XS 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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