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3023 Heard (1981 JS)
Classification: Main-belt Asteroid          SPK-ID: 2003023
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08443117791506355 3.0465e-08  
a 2.216017059198045 5.9049e-09 au
q 2.028916128610079 6.9285e-08 au
i 3.994137276425213 3.0459e-06 deg
node 230.6490071872129 4.3368e-05 deg
peri 344.6672402068372 4.7021e-05 deg
M 316.4550451690337 1.8124e-05 deg
tp 2459146.244917754440
(2020-Oct-23.74491775)
6.0778e-05 TDB
period 1204.919619167606
3.30
4.816e-06
1.319e-08
d
yr
n .2987751168403238 1.1942e-09 deg/d
Q 2.40311798978601 6.4035e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2741  
   data-arc span      14777 days (40.46 yr)  
   first obs. used      1979-11-14  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43082  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:48:26  

Additional Information
 Earth MOID = 1.02196 au 
 Jupiter MOID = 2.56642 au 
 T_jup = 3.645 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457026.5 (2015-Jan-04.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08459682665559756 3.0442e-08  
q 2.028765890474354 6.9248e-08 au
tp 2456736.757869936932
(2014-Mar-20.25786994)
5.95e-05 TDB
node 230.6800879269841 4.3397e-05 deg
peri 344.8093924994249 4.7042e-05 deg
i 3.99230676962201 3.0452e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2741  
   data-arc span      14777 days (40.46 yr)  
   first obs. used      1979-11-14  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43082  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:48:26  

Additional Information
 Jupiter MOID = 2.56642 au 
 T_jup = 3.645 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.267105000946658E-16 -2.102202710078083E-15 -1.4130190361753E-13 1.747158442194305E-15 -2.391215661435536E-14 -4.277389107061569E-16
q -2.102202710078083E-15 4.795322662912068E-15 3.286551975534321E-13 -4.015484147574341E-15 5.804063364491481E-14 1.026929328796116E-15
tp -1.4130190361753E-13 3.286551975534321E-13 3.540302947799363E-9 -4.194125710519652E-12 1.087247973180575E-9 1.85297688980913E-12
node 1.747158442194305E-15 -4.015484147574341E-15 -4.194125710519652E-12 1.883294542633336E-9 -1.879747381587184E-9 -1.228881252372787E-11
peri -2.391215661435536E-14 5.804063364491481E-14 1.087247973180575E-9 -1.879747381587184E-9 2.212955139765294E-9 1.282751168715908E-11
i -4.277389107061569E-16 1.026929328796116E-15 1.85297688980913E-12 -1.228881252372787E-11 1.282751168715908E-11 9.273337946212036E-12

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 13.5   n/a MPO358657  
diameter diameter 4.991 km 0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.713 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.257   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3023 Heard (1981 JS)          Discovered 1981-May-05 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1981 JS = 1951 ET = 1964 DF = 1979 VO3 = 1979 YB2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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