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312942 (1995 EK1)
Classification: Apollo [NEO]          SPK-ID: 2312942
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 69 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7768872817506983 3.7391e-08  
a 2.263753377513843 6.1806e-09 au
q .5050721695031511 8.5126e-08 au
i 9.067106454204994 8.6839e-06 deg
node 352.6478756737338 1.7503e-05 deg
peri 299.7938357851731 1.964e-05 deg
M 120.9114567477409 8.6153e-06 deg
tp 2458582.662853797427
(2019-Apr-09.16285380)
2.8362e-05 TDB
period 1244.062197900339
3.41
5.0949e-06
1.395e-08
d
yr
n .289374599282567 1.1851e-09 deg/d
Q 4.022434585524535 1.0982e-08 au
  Orbit Determination Parameters
   # obs. used (total)      593  
   data-arc span      7327 days (20.06 yr)  
   first obs. used      1995-03-02  
   last obs. used      2015-03-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49483  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 09:23:51  

Additional Information
 Earth MOID = .0590013 au 
 Jupiter MOID = 1.36005 au 
 T_jup = 3.119 
[ 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 17.3   n/a MPO326436  
rotation period rot_per 8.444 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Erikson, A.; Mottola, S.; Lagerros, J.S.V.; Lindgren, M.; et al. (2000) Icarus 147, 487-497.]

312942 (1995 EK1)          Discovered 1995-Mar-07 by Kobayashi, T. at Oizumi
Reference: 20120207/Numbers.arcLast Updated: 2012-02-09

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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