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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .331551138904556 3.8237e-08  
a 2.874530467571729 6.1952e-09 au
q 1.921476617232476 1.086e-07 au
i 1.852744577452173 4.1476e-06 deg
node 8.451622056431852 0.00012223 deg
peri 338.446707024241 0.00012232 deg
M 103.3268713962439 6.2171e-06 deg
tp 2458689.572145401186
(2019-Jul-25.07214540)
3.0243e-05 TDB
period 1780.118038706621
4.87
5.7547e-06
1.576e-08
d
yr
n .2022337801045851 6.5378e-10 deg/d
Q 3.827584317910981 8.2492e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3458  
   data-arc span      60262 days (164.99 yr)  
   first obs. used      1856-01-25  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46824  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:42:50  

Additional Information
 Earth MOID = .913084 au 
 Jupiter MOID = 1.60325 au 
 T_jup = 3.212 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455960.5 (2012-Feb-03.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3375634293047826 3.8453e-08  
q 1.898655806860878 1.0968e-07 au
tp 2455137.703858453879
(2009-Nov-02.20385845)
2.8264e-05 TDB
node 8.591800543481611 0.0001211 deg
peri 338.1489760095507 0.00012118 deg
i 1.870497405824137 4.1668e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3458  
   data-arc span      60262 days (164.99 yr)  
   first obs. used      1856-01-25  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46824  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:42:50  

Additional Information
 Jupiter MOID = 1.60325 au 
 T_jup = 3.212 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.478637447892217E-15 -4.215123591698243E-15 -7.517577594010831E-14 4.505523198872711E-15 -2.951159326568874E-14 -6.853112389454642E-17
q -4.215123591698243E-15 1.203074116525254E-14 2.020697159499928E-13 -1.714643031322602E-14 8.681698348322779E-14 2.677299152036435E-16
tp -7.517577594010831E-14 2.020697159499928E-13 7.988700446702541E-10 -5.320629770687035E-12 1.515901264359953E-10 1.516420455548949E-14
node 4.505523198872711E-15 -1.714643031322602E-14 -5.320629770687035E-12 1.466404456189388E-8 -1.465670161969722E-8 -1.03464737762919E-10
peri -2.951159326568874E-14 8.681698348322779E-14 1.515901264359953E-10 -1.465670161969722E-8 1.46847810126535E-8 1.034137680516266E-10
i -6.853112389454642E-17 2.677299152036435E-16 1.516420455548949E-14 -1.03464737762919E-10 1.034137680516266E-10 1.736226488928892E-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 8.52   n/a E2021B10  
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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1943-Sep-06 18:34 < 00:01 Jupiter 1.78087389688403 1.78087326309109 1.78087453068179 0.692891161906959 n/a 2430974.273385700 0.776418396211303 232.533457189906 24.4464894883133 85.0307178522831 10854440.09076 F 46 CATAB v2.0f-lin.ifort 2021-Feb-24 00:42:59 2021-Feb-24 00:43
1968-Jun-14 05:01 < 00:01 Jupiter 1.57083106406825 1.57083071309998 1.57083141503787 0.533961464561264 n/a 2440021.709128021 0.41269047621756 103.70033996246 12.2441976457479 83.0248569273998 19046280.7412821 F 46 CATAB v2.0f-lin.ifort 2021-Feb-24 00:42:59 2021-Feb-24 00:43
1993-Mar-14 19:18 < 00:01 Jupiter 1.77420441827656 1.77420402949474 1.77420480725658 0.488702541093468 n/a 2449061.304360090 0.234816779140883 1539.46362343828 15.4035110502869 -89.5615300618157 17225795.5409558 F 46 CATAB v2.0f-lin.ifort 2021-Feb-24 00:42:59 2021-Feb-24 00:43
2050-Jul-14 20:17 < 00:01 Jupiter 1.77897858072548 1.77897808585976 1.77897907559576 0.686613820153734 n/a 2470002.345213001 0.425726145092929 246.867795265167 20.1303369185261 86.6743601790098 13194737.6401385 F 46 CATAB v2.0f-lin.ifort 2021-Feb-24 00:42:59 2021-Feb-24 00:43
2075-Apr-21 08:45 < 00:01 Jupiter 1.5756067911429 1.5756064392115 1.5756071430759 0.524245017023824 n/a 2479048.864644819 0.583073207597854 108.050243325533 11.7769978542942 83.0422432303935 19862499.352168 F 46 CATAB v2.0f-lin.ifort 2021-Feb-24 00:42:59 2021-Feb-24 00:43
2100-Jan-20 05:43 < 00:01 Jupiter 1.77430302240939 1.77430233970163 1.77430370535385 0.463714032072936 n/a 2488088.737970866 0.937865663930124 1464.85248592653 24.3887173528389 -89.0704562561058 10879019.5569786 F 46 CATAB v2.0f-lin.ifort 2021-Feb-24 00:42:59 2021-Feb-24 00:43
2157-May-22 18:03 00:02 Jupiter 1.78446739774051 1.78446630198225 1.78446849351905 0.693535843322873 n/a 2509030.252286569 1.53802072084812 369.975231058425 31.2847100975248 83.0200415426287 8467924.58343373 F 46 CATAB v2.0f-lin.ifort 2021-Feb-24 00:42:59 2021-Feb-24 00:43
2182-Feb-26 10:12 00:02 Jupiter 1.57713090973739 1.57713055723601 1.57713126224053 0.513069043772286 n/a 2518075.924874313 1.5482884363439 148.929363071056 14.5436924128606 86.1808831355201 16181914.5433609 F 46 CATAB v2.0f-lin.ifort 2021-Feb-24 00:42:59 2021-Feb-24 00:43

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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