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6982 Cesarchavez (1993 UA3)
Classification: Main-belt Asteroid          SPK-ID: 2006982
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1824087504946312 3.2547e-08  
a 2.64308261010015 9.2372e-09 au
q 2.160961213737693 8.4668e-08 au
i 12.53823770163617 4.6394e-06 deg
node 204.7228961823222 1.4825e-05 deg
peri 123.5637323556424 1.952e-05 deg
M 92.01336423894105 1.2685e-05 deg
tp 2458599.344323552261
(2019-Apr-25.84432355)
5.501e-05 TDB
period 1569.511610793465
4.30
8.2278e-06
2.253e-08
d
yr
n .2293707147652143 1.2024e-09 deg/d
Q 3.125204006462607 1.0922e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2246  
   data-arc span      31549 days (86.38 yr)  
   first obs. used      1933-09-18  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44117  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:17:25  

Additional Information
 Earth MOID = 1.17959 au 
 Jupiter MOID = 2.39553 au 
 T_jup = 3.337 
[ 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 12.8   n/a MPO452266  
diameter diameter 7.915 km 0.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 16.08 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:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.261   0.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

6982 Cesarchavez           Discovered 1993 Oct. 16 by E. F. Helin at Palomar.
Cesar Chavez (1927-1993) was an Mexican-American civil rights leader. He co-founded the National Farmworkers Association, which won significant protections for farmworkers. His birthday is a holiday in several US states, and he received the Presidential Medal of Freedom in 1994.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2019-08-27Last Updated: 2019-09-23

[ show close-approach data ]
Alternate Designations
 1993 UA3 = 1933 SK = 1980 RS3 = 1984 ND = 1989 UV6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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