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56 Melete
Classification: Main-belt Asteroid          SPK-ID: 2000056
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 92 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2372597211270825 2.9207e-08  
a 2.596411744913079 5.757e-09 au
q 1.980387818383921 7.568e-08 au
i 8.080310477494416 4.6492e-06 deg
node 192.9979827991321 2.6945e-05 deg
peri 105.0380643837065 2.883e-05 deg
M 323.8374934547867 1.1655e-05 deg
tp 2457554.002268810745
(2016-Jun-14.50226881)
4.9645e-05 JED
period 1528.124625508931
4.18
5.0825e-06
1.392e-08
d
yr
n .2355828798191801 7.8354e-10 deg/d
Q 3.212435671442239 7.123e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1729  
   data-arc span      54844 days (150.15 yr)  
   first obs. used      1865-06-13  
   last obs. used      2015-08-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56285  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-05 13:01:48  

Additional Information
 Earth MOID = .98193 au 
 Jupiter MOID = 2.08369 au 
 T_jup = 3.363 
[ 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 8.31 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 26
diameter diameter 113.24 km 1.7 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 26
rotation period rot_per 18.147 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Published Reference List:
[Bel'skaya, I.N.; Dovgopol, A.N.; Erikson, A.; Lagerkvist, C.-I.; Oja, T. (1993) Astron. Astrophys. Suppl. Ser. 101, 507-511.]
[Behrend, R. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2007) Minor Planet Bul. 34, 104-107.]
[Pilcher, F.; Jardine, D. (2009) Minor Planet Bul. 36, 52-54.]
[Warner, B.D. (2011) http://www.minorplanetobserver.com/PDO/PDOLig htcurves.htm]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2015) Astron. Astrophys., in press.arXiv:1510.07422]
geometric albedo albedo 0.0653   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 26
B-V BV .697 mag .033 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=4; phase (min.=4.79, mean=12.85, max.=28.04) deg.
U-B UB .312 mag .039 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=4; phase (min.=4.79, mean=12.85, max.=28.04) deg.
Tholen spectral type spec_T P   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Xk   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

56 Melete          Discovered 1857-Sep-09 by Goldschmidt, H. at Paris
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1949 TH = 1986 EN5 = 1990 HG4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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