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11 Parthenope
Classification: Main-belt Asteroid          SPK-ID: 2000011
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 83 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1000254221677091 2.5737e-08  
a 2.452500749824019 2.5146e-09 AU
q 2.207188326956249 6.335e-08 AU
i 4.629854448985334 3.2707e-06 deg
node 125.5671228435043 2.4419e-05 deg
peri 196.0176237182478 2.6977e-05 deg
M 227.8370403890084 1.1269e-05 deg
tp 2457515.514438687597
(2016-May-07.01443869)
4.3973e-05 JED
period 1402.85295118433
3.84
2.1576e-06
5.907e-09
d
yr
n .2566199113713787 3.9468e-10 deg/d
Q 2.697813172691789 2.7661e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      4942  
   data-arc span      60031 days (164.36 yr)  
   first obs. used      1850-09-17  
   last obs. used      2015-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .46303  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 13:25:08  

Additional Information
 Earth MOID = 1.19556 AU 
 T_jup = 3.483 
[ 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 6.55 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
diameter diameter 153.33 km 3.1 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
rotation period rot_per 13.7204 h n/a LCDB (Rev. 2015-Feb); Warner et al., 2009 Published Reference List:
[Lang, K.; Hansen, A.T. (1999) Minor Planet Bul. 26, 15-18.]
[Stephens, R.D.; Warner, B.D.; Harris, A.W.; Shepard, M.K. (2008) Bul. Amer. Astron. Soc. 40, 439. (poster 28.16)]
[Pilcher, F. (2010) Minor Planet Bul. 37, 119-122.]
[Pilcher, F. (2011) Minor Planet Bul. 38, 183-185.]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.1803   0.007 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
B-V BV .837 mag .030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=11; phase (min.=6.57, mean=18.28, max.=25.56) deg.
U-B UB .417 mag .035 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=10; phase (min.=6.57, mean=17.81, max.=25.56) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Sk   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)

11 Parthenope          Discovered 1850-May-11 by De Gasparis, A. at Naples
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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