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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1717425506253426 5.479e-08  
a 2.572385524099739 1.8926e-08 AU
q 2.130597472999141 1.4121e-07 AU
i 6.756254694223902 7.8696e-06 deg
node 300.9562995471464 4.444e-05 deg
peri 310.1115668165333 5.1293e-05 deg
M 318.046079268253 2.9709e-05 deg
tp 2457176.119430646596
(2015-Jun-02.61943065)
0.00012522 JED
period 1506.962732685271
4.13
1.6631e-05
4.553e-08
d
yr
n .2388911100399362 2.6364e-09 deg/d
Q 3.014173575200337 2.2176e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1240  
   data-arc span      16897 days (46.26 yr)  
   first obs. used      1969-03-12  
   last obs. used      2015-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50604  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 11:53:06  

Additional Information
 Earth MOID = 1.1251 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. 2015-July); 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) arXiv:1506.08493.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J., in press.]

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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