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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1501175971939283 3.1188e-08  
a 2.24497272528354 6.1504e-09 au
q 1.90796281399807 7.155e-08 au
i .820334253660822 3.9374e-06 deg
node 27.43769574650933 0.00022516 deg
peri 36.58021916302607 0.00022558 deg
M 248.5200375119296 1.4507e-05 deg
tp 2459380.960297829259
(2021-Jun-15.46029783)
5.0223e-05 TDB
period 1228.612785308303
3.36
5.0489e-06
1.382e-08
d
yr
n .2930133922622847 1.2041e-09 deg/d
Q 2.58198263656901 7.0737e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2164  
   data-arc span      16576 days (45.38 yr)  
   first obs. used      1975-03-15  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45409  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:55:35  

Additional Information
 Earth MOID = .921351 au 
 Jupiter MOID = 2.70472 au 
 T_jup = 3.616 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456821.5 (2014-Jun-13.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .150578568625277 3.1267e-08  
q 1.905904855021564 7.1758e-08 au
tp 2456925.041083185297
(2014-Sep-24.54108319)
4.594e-05 TDB
node 27.50890495571143 0.00022471 deg
peri 36.561079036884 0.00022512 deg
i .821768649357293 3.9391e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2164  
   data-arc span      16576 days (45.38 yr)  
   first obs. used      1975-03-15  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45409  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:55:35  

Additional Information
 Jupiter MOID = 2.70472 au 
 T_jup = 3.616 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.776213108002667E-16 -2.238262572482274E-15 -5.078544050114194E-13 4.689134309966011E-15 -1.554575150631877E-13 -1.212644844847463E-16
q -2.238262572482274E-15 5.149255826859185E-15 1.209588731222005E-12 -1.148418114044777E-14 3.688524668691344E-13 2.957604214927182E-16
tp -5.078544050114194E-13 1.209588731222005E-12 2.110451943282315E-9 -7.595382135203812E-12 6.369848064464344E-10 1.867280999098126E-13
node 4.689134309966011E-15 -1.148418114044777E-14 -7.595382135203812E-12 5.049310109831633E-8 -5.04896914305609E-8 -1.68598916334545E-10
peri -1.554575150631877E-13 3.688524668691344E-13 6.369848064464344E-10 -5.04896914305609E-8 5.06805448751427E-8 1.686395006083447E-10
i -1.212644844847463E-16 2.957604214927182E-16 1.867280999098126E-13 -1.68598916334545E-10 1.686395006083447E-10 1.551622748843251E-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

[ show close-approach data ]
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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