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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 143 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .171251396893983 2.6332e-08  
a 2.527685545266368 4.1711e-09 au
q 2.094815864730773 6.6065e-08 au
i 2.348078150727654 2.9808e-06 deg
node 181.0776879070095 8.0481e-05 deg
peri 177.0481165934802 8.0632e-05 deg
M 184.8261384494966 1.0645e-05 deg
tp 2458314.749256823605
(2018-Jul-15.24925682)
4.4024e-05 JED
period 1467.854451460877
4.02
3.6333e-06
9.947e-09
d
yr
n .2452559241426909 6.0707e-10 deg/d
Q 2.960555225801962 4.8855e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2578  
   data-arc span      55519 days (152.00 yr)  
   first obs. used      1864-04-05  
   last obs. used      2016-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5911  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:24:57  

Additional Information
 Earth MOID = 1.08991 au 
 Jupiter MOID = 2.47825 au 
 T_jup = 3.431 
[ 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 LCDB (Rev. 2016-February); Warner et al., 2009 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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