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46 Hestia
Classification: Main-belt Asteroid          SPK-ID: 2000046
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 129 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1718774393229868 2.6733e-08  
a 2.525518048245539 4.2812e-09 AU
q 2.091438473149108 6.7164e-08 AU
i 2.344479298695777 3.0931e-06 deg
node 181.1278702916371 8.5328e-05 deg
peri 176.5452899855056 8.5375e-05 deg
M 348.9500410523326 1.0919e-05 deg
tp 2456845.496870025488
(2014-Jul-06.99687003)
4.45e-05 JED
period 1465.966822672675
4.01
3.7276e-06
1.021e-08
d
yr
n .245571724020102 6.2443e-10 deg/d
Q 2.95959762334197 5.0171e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      2182  
   data-arc span      54477 days (149.15 yr)  
   first obs. used      1864-04-05  
   last obs. used      2013-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .61132  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:08:27  

Additional Information
 Earth MOID = 1.08609 AU 
 T_jup = 3.432 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.36 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 8
magnitude slope G 0.06   n/a PDS3 (MPC 17257) Fit
diameter diameter 124.14 km 3.6 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 8
rotation period rot_per 21.040 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Published Reference List:
[Scaltriti, F.; Zappala, V.; Harris, A.W. (1981) Icarus 46, 275-280.]
[Pilcher, F. (2012) Minor Planet Bul. 39, 171-173.]
geometric albedo albedo 0.0519   0.003 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 8
B-V BV .692 mag .030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=6; phase (min.=5.29, mean=10.53, max.=19.03) deg.
U-B UB .226 mag .040 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=7; phase (min.=5.29, mean=11.62, max.=19.03) deg.
Tholen spectral type spec_T P   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Xc   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)

46 Hestia          Discovered 1857-Aug-16 by Pogson, N. R. at Oxford
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1935 EY 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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