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33 Polyhymnia
Classification: Main-belt Asteroid          SPK-ID: 2000033
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3366752510361247 4.7619e-08  
a 2.867401851075907 6.8292e-09 AU
q 1.902018613043477 1.3647e-07 AU
i 1.868771447204517 5.3257e-06 deg
node 8.577478070668203 0.00014456 deg
peri 338.0973853346144 0.00014488 deg
M 18.2688738643857 7.2612e-06 deg
tp 2456910.500407040132
(2014-Sep-10.00040704)
3.5684e-05 JED
period 1773.500310203266
4.86
6.3359e-06
1.735e-08
d
yr
n .2029884054312567 7.2518e-10 deg/d
Q 3.832785089108337 9.1285e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1606  
   data-arc span      57952 days (158.66 yr)  
   first obs. used      1856-01-25  
   last obs. used      2014-09-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60223  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 13:44:14  

Additional Information
 Earth MOID = .895706 AU 
 T_jup = 3.212 
[ 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 8.55 mag n/a PDS3 (MPC 17257)  
magnitude slope G 0.33   n/a PDS3 (MPC 17257) Fit
rotation period rot_per 18.608 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Zappala, V.; Scaltriti, F.; Lagerkvist, C.-I.; Rickman, H.; Harris, A.W. (1982) Icarus 52, 196-201.]
[Pilcher, F. (2009) Minor Planet Bul. 36, 25-27.]
[Pilcher, F. (2011) Minor Planet Bul. 38, 130-131.]
[Ferrero, A. (2012) Minor Planet Bul. 39, 138-139.]
[Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
B-V BV .848 mag .034 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=3; phase (min.=3.07, mean=8.93, max.=15.71) deg.
U-B UB .438 mag .056 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=3; phase (min.=3.07, mean=8.93, max.=15.71) 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 Sq   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)

33 Polyhymnia          Discovered 1854-Oct-28 by Chacornac, J. at Paris
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1938 FE = 1953 AK = 1957 YL = 1963 DG = 1976 YT7 = A887 HA 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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