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85078 (1509 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2085078
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1349059796219964 5.4908e-08  
a 2.174567542863949 8.1724e-09 au
q 1.88120537823969 1.1809e-07 au
i 5.163376225487484 5.5476e-06 deg
node 338.7800037308199 5.1222e-05 deg
peri 5.226884226803748 5.4807e-05 deg
M 212.7479825415561 2.2858e-05 deg
tp 2459479.589366925407
(2021-Sep-22.08936693)
7.6032e-05 TDB
period 1171.27204822046
3.21
6.6027e-06
1.808e-08
d
yr
n .3073581415581086 1.7327e-09 deg/d
Q 2.467929707488207 9.2749e-09 au
  Orbit Determination Parameters
   # obs. used (total)      561  
   data-arc span      17021 days (46.60 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58264  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:33:21  

Additional Information
 Earth MOID = .873416 au 
 Jupiter MOID = 2.90631 au 
 T_jup = 3.669 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457183.5 (2015-Jun-10.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1352195366248363 5.4949e-08  
q 1.880714035751964 1.1822e-07 au
tp 2457135.537565657482
(2015-Apr-23.03756566)
6.8259e-05 TDB
node 338.8317646788186 5.1155e-05 deg
peri 4.895175895206225 5.4727e-05 deg
i 5.167169400348103 5.5499e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      561  
   data-arc span      17021 days (46.60 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58264  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:33:21  

Additional Information
 Jupiter MOID = 2.90631 au 
 T_jup = 3.669 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.019432314693328E-15 -6.484922741307557E-15 1.877645471706961E-12 8.111405922837254E-15 5.27716650993353E-13 1.175927734732388E-15
q -6.484922741307557E-15 1.397583328706971E-14 -3.83776926634825E-12 -1.740335058562659E-14 -1.080802734868024E-12 -2.417682668156807E-15
tp 1.877645471706961E-12 -3.83776926634825E-12 4.659304144090738E-9 -5.490641470431827E-12 1.347544739804647E-9 -8.639083735165726E-14
node 8.111405922837254E-15 -1.740335058562659E-14 -5.490641470431827E-12 2.616861390377949E-9 -2.606913126828876E-9 1.177291212723683E-10
peri 5.27716650993353E-13 -1.080802734868024E-12 1.347544739804647E-9 -2.606913126828876E-9 2.995006747711335E-9 -1.172811708300064E-10
i 1.175927734732388E-15 -2.417682668156807E-15 -8.639083735165726E-14 1.177291212723683E-10 -1.172811708300064E-10 3.080147809332347E-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 16.5   n/a MPO296712  

85078 (1509 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

Alternate Designations
 1509 T-2 = 2002 TA239 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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