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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 76 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09954123468920056 2.8506e-08  
a 2.453666978564074 2.1869e-09 AU
q 2.209425938001686 7.0193e-08 AU
i 4.629529108471149 3.2886e-06 deg
node 125.565400701537 2.4158e-05 deg
peri 195.8938569314592 2.7076e-05 deg
M 176.6630845370747 1.1324e-05 deg
tp 2456111.585759088719
(2012-Jul-03.08575909)
4.4353e-05 JED
period 1403.853710456493
3.84
1.8769e-06
5.139e-09
d
yr
n .256436975817757 3.4284e-10 deg/d
Q 2.697908019126462 2.4046e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      4802  
   data-arc span      59712 days (163.48 yr)  
   first obs. used      1850-09-17  
   last obs. used      2014-03-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55181  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Mar-22 10:32:19  

Additional Information
 Earth MOID = 1.19588 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 Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) 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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