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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 
[ show covariance matrix ]

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

[ 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 1.78087391043538 1.78087327509244 1.78087454578314 0.692891093080614 n/a 2430974.273394432 0.78039269802351 232.967380751352 24.5143556992618 85.0302347384361 10824383.4176774 F 44 CATAB v2.0f-lin.ifort 2020-Dec-18 01:50:43 2020-Dec-18 01:50
1968-Jun-14 05:01 < 00:01 Jupiter 1.57083105664849 1.57083070283813 1.57083141046025 0.533961418161365 n/a 2440021.709129120 0.414635936317027 104.271350253439 12.3094640044689 82.9883589497083 18943834.2918373 F 44 CATAB v2.0f-lin.ifort 2020-Dec-18 01:50:43 2020-Dec-18 01:50
1993-Mar-14 19:18 < 00:01 Jupiter 1.77420438688545 1.77420398481977 1.77420478916889 0.488702408743694 n/a 2449061.304346203 0.236544602075333 1600.47973017696 15.8532616132434 -89.5602569309038 16737103.6025851 F 44 CATAB v2.0f-lin.ifort 2020-Dec-18 01:50:43 2020-Dec-18 01:50
2050-Jul-14 20:17 < 00:01 Jupiter 1.77897861019592 1.77897810627632 1.77897911412004 0.6866138177375 n/a 2470002.345201028 0.433629301205366 247.196465644922 20.5498638950942 86.6344056851909 12924848.6484609 F 44 CATAB v2.0f-lin.ifort 2020-Dec-18 01:50:43 2020-Dec-18 01:50
2075-Apr-21 08:45 < 00:01 Jupiter 1.57560678363923 1.57560642893655 1.57560713834349 0.524244969810369 n/a 2479048.864634088 0.590708454352955 108.13956606208 11.9804266244453 83.0458727426429 19525438.4823896 F 44 CATAB v2.0f-lin.ifort 2020-Dec-18 01:50:43 2020-Dec-18 01:50
2100-Jan-20 05:43 < 00:01 Jupiter 1.77430297759218 1.77430226872558 1.77430368672218 0.463713926663707 n/a 2488088.737955088 0.952083178352216 1533.64305256404 25.1397331239868 -89.0711271147759 10554025.1811277 F 44 CATAB v2.0f-lin.ifort 2020-Dec-18 01:50:43 2020-Dec-18 01:50
2157-May-22 18:03 00:02 Jupiter 1.78446744100857 1.78446632877797 1.78446855325971 0.693535849876648 n/a 2509030.252262911 1.5558383768236 372.18260289557 31.7118978028067 82.9517423312946 8352644.7086099 F 44 CATAB v2.0f-lin.ifort 2020-Dec-18 01:50:43 2020-Dec-18 01:50
2182-Feb-26 10:12 00:02 Jupiter 1.5771309021735 1.57713054688315 1.57713125746553 0.513069002658546 n/a 2518075.924841078 1.56463409644956 149.396964633834 14.8162465737888 86.2532859169852 15885563.1084321 F 44 CATAB v2.0f-lin.ifort 2020-Dec-18 01:50:43 2020-Dec-18 01:50

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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