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3057 Malaren (1981 EG)
Classification: Main-belt Asteroid          SPK-ID: 2003057
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07517510375254147 4.2267e-08  
a 2.259821824394527 9.2937e-09 au
q 2.08993948428341 9.4467e-08 au
i 7.277053890603339 4.0207e-06 deg
node 75.31513274779013 3.9538e-05 deg
peri 122.3227814938869 5.0206e-05 deg
M 159.6081061410557 3.2082e-05 deg
tp 2458450.374003358656
(2018-Nov-27.87400336)
0.00011009 TDB
period 1240.822684882048
3.40
7.6545e-06
2.096e-08
d
yr
n .2901300922252411 1.7898e-09 deg/d
Q 2.429704164505643 9.9923e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1655  
   data-arc span      24279 days (66.47 yr)  
   first obs. used      1952-11-16  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4976  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 22:42:52  

Additional Information
 Earth MOID = 1.09618 au 
 Jupiter MOID = 2.54282 au 
 T_jup = 3.606 
[ 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 13.5   n/a MPO384779  
rotation period rot_per 4.496 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

3057 Malaren (1981 EG)          Discovered 1981-Mar-09 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 EG = 1976 YH4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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