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33 Polyhymnia (A854 UB)
Classification: Main-belt Asteroid          SPK-ID: 2000033
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3314689543146266 3.8816e-08  
a 2.87405960679094 6.2027e-09 au
q 1.92139807429004 1.103e-07 au
i 1.852708161573494 4.3474e-06 deg
node 8.45941250434856 0.00012276 deg
peri 338.4144860057318 0.00012286 deg
M 62.91487160237903 6.2053e-06 deg
tp 2458689.476719901412
(2019-Jul-24.97671990)		 3.0389e-05 TDB
period 1779.68066982843
4.87		 5.7612e-06
1.577e-08		 d
yr
n .2022834804598433 6.5484e-10 deg/d
Q 3.826721139291839 8.2587e-09 au
   Orbit Determination Parameters
   # obs. used (total)      3270  
   data-arc span      60195 days (164.80 yr)  
   first obs. used      1856-01-25  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4783  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:50:34  

Additional Information
 Earth MOID = .914781 au 
 Jupiter MOID = 1.60332 au 
 T_jup = 3.212 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455771.5 (2011-Jul-29.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3378238953236544 3.9063e-08  
q 1.897495364691417 1.115e-07 au
tp 2455137.847549274729
(2009-Nov-02.34754927)		 2.8465e-05 TDB
node 8.582976508941382 0.0001216 deg
peri 338.1390306294124 0.00012169 deg
i 1.870875656799477 4.3672e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      3270  
   data-arc span      60195 days (164.80 yr)  
   first obs. used      1856-01-25  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4783  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:50:34  

Additional Information
 Jupiter MOID = 1.60332 au 
 T_jup = 3.212 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.525884298906831E-15 -4.352627497921211E-15 -5.049841590000356E-14 3.637616506581698E-15 -1.935812388142527E-14 -1.646958621585786E-16
q -4.352627497921211E-15 1.24311551489612E-14 1.294205811012802E-13 -1.482488117992957E-14 5.718972144695226E-14 5.470860546760743E-16
tp -5.049841590000356E-14 1.294205811012802E-13 8.102347583550804E-10 -5.158393677801506E-12 1.56005579222938E-10 3.982425849771589E-14
node 3.637616506581698E-15 -1.482488117992957E-14 -5.158393677801506E-12 1.478670859948454E-8 -1.47793024219067E-8 -8.943458114391974E-11
peri -1.935812388142527E-14 5.718972144695226E-14 1.56005579222938E-10 -1.47793024219067E-8 1.480909600041813E-8 8.93957014171488E-11
i -1.646958621585786E-16 5.470860546760743E-16 3.982425849771589E-14 -8.943458114391974E-11 8.93957014171488E-11 1.907217900176889E-11

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.5   n/a MPO502153  
magnitude slope G 0.33   n/a PDS3 (MPC 17257) Fit
diameter diameter 52.929 km 2.304 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 18.608 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 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 Bull. 36, 25-27.]
[Pilcher, F. (2011) Minor Planet Bull. 38, 130-131.]
[Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Ferrero, A. (2012) Minor Planet Bull. 39, 138-139.]
[Pilcher, F. (2018) Minor Planet Bull. 45, 356-359.]
[Franco, L.; Pilcher, F.; Ferrero, A.; Maurice, A. (2020) Minor Planet Bull. 47, 120-122.]
[Pilcher, F. (2020) Minor Planet Bull. 47, 34-36.]
geometric albedo albedo 0.240   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.848   0.034 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=3.07, mean=8.93, max.=15.71) deg.
U-B UB 0.438   0.056 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #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 (A854 UB)          Discovered 1854-Oct-28 by Chacornac, J. at Paris
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A854 UB = 1938 FE = 1953 AK = 1957 YL = 1963 DG = 1976 YT7 = A887 HA 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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