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

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0744594475246399 6.7729e-08  
a 2.260113490910616 1.1964e-08 au
q 2.091826689034427 1.5386e-07 au
i 7.277649926159981 5.6249e-06 deg
node 75.33175034208681 4.9925e-05 deg
peri 122.2854357326358 6.1354e-05 deg
M 55.63243723535457 3.5715e-05 deg
tp 2457208.712903551882
(2015-Jul-05.21290355)
0.00012309 JED
period 1241.062914954323
3.40
9.8542e-06
2.698e-08
d
yr
n .2900739323221577 2.3032e-09 deg/d
Q 2.428400292786806 1.2855e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1222  
   data-arc span      22859 days (62.58 yr)  
   first obs. used      1952-11-16  
   last obs. used      2015-06-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50653  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:07:48  

Additional Information
 Earth MOID = 1.09768 au 
 Jupiter MOID = 2.5449 au 
 T_jup = 3.606 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.4 mag n/a MPO272651  
rotation period rot_per 4.4955 h n/a LCDB (Rev. 2015-December); 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 | Physical Parameters | Discovery Circumstances ]
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