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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 ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08460200302150407 3.5953e-08  
a 2.216216136719339 6.4365e-09 au
q 2.028719812424303 7.9972e-08 au
i 3.994427940701581 3.8564e-06 deg
node 230.654705022723 4.5168e-05 deg
peri 344.5605468919268 4.8717e-05 deg
M 197.0783029714393 1.807e-05 deg
tp 2459145.872230225943
(2020-Oct-23.37223023)
6.086e-05 TDB
period 1205.08199007356
3.30
5.2498e-06
1.437e-08
d
yr
n .2987348603376149 1.3014e-09 deg/d
Q 2.403712461014374 6.981e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2410  
   data-arc span      14633 days (40.06 yr)  
   first obs. used      1979-11-14  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44549  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 21:24:02  

Additional Information
 Earth MOID = 1.02194 au 
 Jupiter MOID = 2.56669 au 
 T_jup = 3.645 
[ show covariance matrix ]

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-January); 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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