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120430 (2303 T-3)
Classification: Main-belt Asteroid          SPK-ID: 2120430
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 .1838088931598175 4.9228e-08  
a 2.29248322695211 1.229e-08 au
q 1.871104422418596 1.1481e-07 au
i 5.820438706858957 4.3765e-06 deg
node 217.1365647679525 5.4262e-05 deg
peri 161.4289874113938 5.592e-05 deg
M 102.510596210187 1.5057e-05 deg
tp 2458639.486090003313
(2019-Jun-04.98609000)
5.1942e-05 TDB
period 1267.820229357829
3.47
1.0195e-05
2.791e-08
d
yr
n .2839519291961018 2.2835e-09 deg/d
Q 2.713862031485625 1.4549e-08 au
  Orbit Determination Parameters
   # obs. used (total)      404  
   data-arc span      15450 days (42.30 yr)  
   first obs. used      1977-10-07  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60054  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 06:19:09  

Additional Information
 Earth MOID = .874575 au 
 Jupiter MOID = 2.75087 au 
 T_jup = 3.568 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457062.5 (2015-Feb-09.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1843716017456853 4.9504e-08  
q 1.869591258174941 1.1553e-07 au
tp 2457369.809415835506
(2015-Dec-13.30941584)
4.8837e-05 TDB
node 217.1727926204032 5.4301e-05 deg
peri 160.990191237812 5.5926e-05 deg
i 5.817476678976086 4.3793e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      404  
   data-arc span      15450 days (42.30 yr)  
   first obs. used      1977-10-07  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60054  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 06:19:09  

Additional Information
 Jupiter MOID = 2.75087 au 
 T_jup = 3.568 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.450636628128004E-15 -5.698189820894864E-15 -1.160628756415912E-12 -9.518608386324022E-15 -2.604381719582851E-13 -6.260594202622898E-15
q -5.698189820894864E-15 1.334695306637514E-14 2.748758546875609E-12 2.108177305254833E-14 6.128430013326971E-13 1.484210204463124E-14
tp -1.160628756415912E-12 2.748758546875609E-12 2.385083625838363E-9 3.347856149714082E-12 6.829870712708059E-10 5.874708287602202E-12
node -9.518608386324022E-15 2.108177305254833E-14 3.347856149714082E-12 2.948630056903636E-9 -2.932162736666028E-9 -7.194339590326049E-11
peri -2.604381719582851E-13 6.128430013326971E-13 6.829870712708059E-10 -2.932162736666028E-9 3.127712324353348E-9 7.320490835184353E-11
i -6.260594202622898E-15 1.484210204463124E-14 5.874708287602202E-12 -7.194339590326049E-11 7.320490835184353E-11 1.917814408651905E-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 MPO453675  

120430 (2303 T-3)          Discovered 1977-Oct-16 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

Alternate Designations
 2303 T-3 = 2001 RS31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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