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6028 (1994 ER1)
Classification: Main-belt Asteroid          SPK-ID: 2006028
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1720251293955383 5.4755e-08  
a 2.573034166705414 1.6423e-08 au
q 2.130407631238774 1.4134e-07 au
i 6.755329724137678 7.5764e-06 deg
node 300.9505334841162 4.2952e-05 deg
peri 310.1598833112049 4.7979e-05 deg
M 101.3037308150249 2.2948e-05 deg
tp 2457176.281410458193
(2015-Jun-02.78141046)
9.5262e-05 JED
period 1507.53275329915
4.13
1.4433e-05
3.952e-08
d
yr
n .2388007817489606 2.2863e-09 deg/d
Q 3.015660702172054 1.9248e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1257  
   data-arc span      16957 days (46.43 yr)  
   first obs. used      1969-03-12  
   last obs. used      2015-08-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50384  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-05 13:29:14  

Additional Information
 Earth MOID = 1.12318 au 
 Jupiter MOID = 2.0711 au 
 T_jup = 3.398 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.8 mag n/a MPO256908  
rotation period rot_per 3.5278 h n/a LCDB (Rev. 2016-February); 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

6028 (1994 ER1)          Discovered 1994-Mar-11 by Ueda and Kaneda at Kushiro
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1994 ER1 = 1969 EH = 1981 AS1 = 1987 QQ3 = 1987 SQ26 = 1991 RO13 = 1991 SQ1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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