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43656 (2002 ER104)
Classification: Main-belt Asteroid          SPK-ID: 2043656
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1200931580292189 3.9952e-08  
a 2.421522542635121 1.1189e-08 au
q 2.130714253251125 9.6078e-08 au
i 9.389430492076832 4.6634e-06 deg
node 30.16697235617047 2.7901e-05 deg
peri 258.7560872041574 3.4504e-05 deg
M 262.6551467454808 2.0524e-05 deg
tp 2459572.670285338462
(2021-Dec-24.17028534)
7.9135e-05 TDB
period 1376.357334183215
3.77
9.5395e-06
2.612e-08
d
yr
n .261559982323659 1.8129e-09 deg/d
Q 2.712330832019116 1.2533e-08 au
  Orbit Determination Parameters
   # obs. used (total)      991  
   data-arc span      8399 days (23.00 yr)  
   first obs. used      1998-03-25  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53244  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 05:26:28  

Additional Information
 Earth MOID = 1.13696 au 
 Jupiter MOID = 2.45825 au 
 T_jup = 3.485 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.12   n/a MPCxxxxx  
diameter diameter 3.646 km 0.223 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.221 h n/a LCDB (Rev. 2020-October); 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.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.160   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

43656 (2002 ER104)          Discovered 2002-Mar-09 by LINEAR at Socorro
Reference: 20020624/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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