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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 88 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2369609673313827 2.9399e-08  
a 2.598552049113015 6.0142e-09 AU
q 1.982796641894248 7.6034e-08 AU
i 8.073637763543951 4.6653e-06 deg
node 193.0209071227273 2.7338e-05 deg
peri 104.8110410655868 2.9191e-05 deg
M 229.85746007637 1.1569e-05 deg
tp 2457553.611049880920
(2016-Jun-14.11104988)
4.9774e-05 JED
period 1530.014536937565
4.19
5.3117e-06
1.454e-08
d
yr
n .2352918820762095 8.1685e-10 deg/d
Q 3.214307456331781 7.4393e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1679  
   data-arc span      54708 days (149.78 yr)  
   first obs. used      1865-06-13  
   last obs. used      2015-03-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56834  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 15:58:01  

Additional Information
 Earth MOID = .987179 AU 
 T_jup = 3.362 
[ 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-May); 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]
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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