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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02128189932015562 4.6284e-08  
a 5.211918782699976 7.9849e-08 au
q 5.100999251901727 2.2453e-07 au
i 5.65035040321604 4.9379e-06 deg
node 240.3099091226169 4.9824e-05 deg
peri 297.8858899602316 0.0001342 deg
M 135.413834710225 0.00012349 deg
tp 2456965.734656847993
(2014-Nov-04.23465685)
0.0014878 TDB
period 4346.051677763202
11.90
9.9875e-05
2.734e-07
d
yr
n .08283380564523855 1.9036e-09 deg/d
Q 5.322838313498225 8.1548e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1631  
   data-arc span      24758 days (67.78 yr)  
   first obs. used      1951-11-08  
   last obs. used      2019-08-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49628  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:19:10  

Additional Information
 Earth MOID = 4.10797 au 
 Jupiter MOID = .154532 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-January); 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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