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1647 Menelaus (1957 MK)
Classification: Jupiter Trojan          SPK-ID: 2001647
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02115375571857837 4.5838e-08  
a 5.211199201524193 7.6906e-08 au
q 5.1009627666143 2.1949e-07 au
i 5.650383386674185 4.2906e-06 deg
node 240.3054323776731 4.9692e-05 deg
peri 296.4093427255684 0.00011992 deg
M 170.0960800305079 0.00010976 deg
tp 2456947.463156336626
(2014-Oct-16.96315634)
0.0013132 TDB
period 4345.151655383553
11.90
9.6187e-05
2.633e-07
d
yr
n .08285096322333593 1.834e-09 deg/d
Q 5.321435636434087 7.8533e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1795  
   data-arc span      25059 days (68.61 yr)  
   first obs. used      1951-11-08  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48999  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:34:19  

Additional Information
 Earth MOID = 4.1081 au 
 Jupiter MOID = .153288 au 
 T_jup = 2.990 
[ 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 10.5   n/a MPO416723  
diameter diameter 42.716 km 0.517 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 17.74 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Stephens, R.D.; Coley, D.R.; Warner, B.D.; French, L.M. (2016) Minor Planet Bull. 43, 323-331.]
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]
geometric albedo albedo 0.056   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

1647 Menelaus (1957 MK)          Discovered 1957-Jun-23 by Nicholson, S. B. at Mount Wilson
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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