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30974 (1995 EL)
Classification: Main-belt Asteroid          SPK-ID: 2030974
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1823985420687564 3.3666e-08  
a 2.783857022149661 1.1532e-08 au
q 2.276085559981693 9.2319e-08 au
i 8.830622892721353 4.3e-06 deg
node 52.09723655913391 2.105e-05 deg
peri 209.3140192309558 2.3496e-05 deg
M 130.6083799056551 1.1106e-05 deg
tp 2458584.986818515037
(2019-Apr-11.48681852)
5.0963e-05 TDB
period 1696.5584099171
4.64
1.0542e-05
2.886e-08
d
yr
n .2121942857349608 1.3185e-09 deg/d
Q 3.291628484317629 1.3636e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1519  
   data-arc span      9471 days (25.93 yr)  
   first obs. used      1995-03-05  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48858  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 06:43:30  

Additional Information
 Earth MOID = 1.264 au 
 Jupiter MOID = 1.78997 au 
 T_jup = 3.290 
[ 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 14.11   n/a MPCxxxxx  
diameter diameter 9.627 km 0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 11.3835 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.042   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

30974 (1995 EL)          Discovered 1995-Mar-05 by Kobayashi, T. at Oizumi
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1995 EL = 2000 HL10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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