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236 Honoria
Classification: Main-belt Asteroid          SPK-ID: 2000236
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1903515539896464 3.9148e-08  
a 2.797637030183231 8.7968e-09 au
q 2.265102473988874 1.0943e-07 au
i 7.694275002752609 5.0529e-06 deg
node 185.8622230689768 3.6054e-05 deg
peri 174.8949829669303 3.8201e-05 deg
M 252.3964376969699 1.2953e-05 deg
tp 2457911.369090450181
(2017-Jun-06.86909045)
6.2375e-05 JED
period 1709.170854809946
4.68
8.0614e-06
2.207e-08
d
yr
n .2106284453581037 9.9344e-10 deg/d
Q 3.330171586377589 1.0471e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1496  
   data-arc span      47969 days (131.33 yr)  
   first obs. used      1884-04-28  
   last obs. used      2015-08-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58176  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-05 13:03:09  

Additional Information
 Earth MOID = 1.26044 au 
 Jupiter MOID = 2.12296 au 
 T_jup = 3.287 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.18 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 21
magnitude slope G -0.02   n/a PDS3 (MPC 17258) Fit
diameter diameter 86.20 km 3.7 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 21
rotation period rot_per 12.336 h n/a LCDB (Rev. 2015-December); 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 Bul. 41, 155-156.]
geometric albedo albedo 0.1271   0.012 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 21
B-V BV .852 mag .016 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=5; phase (min.=6.27, mean=12.05, max.=20.17) deg.
U-B UB .444 mag .024 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #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          Discovered 1884-Apr-26 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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