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236 Honoria (A884 HA)
Classification: Main-belt Asteroid          SPK-ID: 2000236
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1911514663758643 1.9164e-08  
a 2.797318879840609 7.6854e-09 au
q 2.262607274038186 5.6744e-08 au
i 7.695419669559535 3.901e-07 deg
node 185.8444597373493 1.3438e-06 deg
peri 174.5932238480715 5.1463e-06 deg
M 271.8486862901453 7.7903e-06 deg
tp 2459618.944322616651
(2022-Feb-08.44432262)
3.7945e-05 TDB
period 1708.879309930852
4.68
7.0425e-06
1.928e-08
d
yr
n .2106643798119172 8.6817e-10 deg/d
Q 3.332030485643031 9.1545e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3043  
   data-arc span      49994 days (136.88 yr)  
   first obs. used      1884-04-28  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45367  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:32:51  

Additional Information
 Earth MOID = 1.25814 au 
 Jupiter MOID = 2.13017 au 
 T_jup = 3.287 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.28   n/a E2021B10 IRAS observations used: 21
magnitude slope G -0.02   n/a PDS3 (MPC 17258) Fit
diameter diameter 77.708 km 1.234 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 12.336 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Lagerkvist, C.-I.; Hahn, G.; Magnusson, P.; Rickman, H. (1987) Astron. Astrophys. Suppl. Ser. 70, 21-32.]
[Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.]
[Marciniak, A.; Pilcher, F.; Santana-Ros, T.; Oszkiewicz; Kankiewicz, P. (2014) ACM 2014, Poster 57.]
[Pilcher, F. (2014) Minor Planet Bull. 41, 155-156.]
[Devogele, M.; Tanga, P.; Bendjoya, P.; Rivet, J.P.; et al. (2017) ArXiv:1707.07503.]
[Carbognani, A.; Cellino, A.; Caminiti, S. (2019) Planet. Space Sci. 169, 15-34.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.156   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.852   0.016 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=6.27, mean=12.05, max.=20.17) deg.
U-B UB 0.444   0.024 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=5.06, mean=10.88, max.=20.17) 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 L   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)

236 Honoria (A884 HA)          Discovered 1884-Apr-26 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A884 HA = 1930 KK = 1953 GJ1 = A904 PA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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