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46620 (1994 EL1)
Classification: Main-belt Asteroid          SPK-ID: 2046620
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .138528149540551 1.379e-08  
a 2.188585435947087 5.6207e-09 au
q 1.885404745393937 3.0202e-08 au
i 4.933698495208382 7.1872e-07 deg
node 112.6633708318885 8.6916e-06 deg
peri 317.5340176166974 1.0121e-05 deg
M 192.788588505047 6.811e-06 deg
tp 2459749.796834580966
(2022-Jun-19.29683458)
2.3211e-05 TDB
period 1182.615819585473
3.24
4.5557e-06
1.247e-08
d
yr
n .3044099309665806 1.1727e-09 deg/d
Q 2.491766126500237 6.3993e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2192  
   data-arc span      9655 days (26.43 yr)  
   first obs. used      1994-03-06  
   last obs. used      2020-08-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42568  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:50:46  

Additional Information
 Earth MOID = .902904 au 
 Jupiter MOID = 2.75587 au 
 T_jup = 3.657 
[ 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 14.23   n/a E2021B10  
diameter diameter 3.861 km 0.142 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 20. h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.-K.; Ip, W.-H.; Cheng, Y.-C.; Ngeow, C.-C.; et al. (2014) Astrophys. J. 788, A17.]
geometric albedo albedo 0.226   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46620 (1994 EL1)          Discovered 1994-Mar-06 by Kobayashi, T. at Oizumi
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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