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339 Dorothea (A892 SC)
Classification: Main-belt Asteroid          SPK-ID: 2000339
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 50 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09851035760361598 1.6182e-08  
a 3.010995258439615 1.0661e-08 au
q 2.714381038787936 5.2386e-08 au
i 9.966601925931952 1.4458e-06 deg
node 173.4879364153684 4.3412e-06 deg
peri 164.5634737131813 1.2957e-05 deg
M 249.9606843551789 1.4659e-05 deg
tp 2459979.822749637768
(2023-Feb-04.32274964)
7.8819e-05 TDB
period 1908.374190070491
5.22
1.0135e-05
2.775e-08
d
yr
n .188642249446217 1.0018e-09 deg/d
Q 3.307609478091293 1.1711e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3840  
   data-arc span      47068 days (128.87 yr)  
   first obs. used      1892-09-25  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37464  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 06:30:31  

Additional Information
 Earth MOID = 1.7065 au 
 Jupiter MOID = 2.11397 au 
 T_jup = 3.219 
[ 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 9.43   n/a MPO636065 IRAS observations used: 11
diameter diameter 44.329 km 0.270 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.974 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2002) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pilcher, F. (2016) Minor Planet Bull. 43, 304-306.]
[Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.198   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.783   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=5.04, mean=13.72, max.=19.60) deg.
U-B UB 0.405   0.064 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=5.04, mean=13.72, max.=19.60) 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 K   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)

339 Dorothea (A892 SC)          Discovered 1892-Sep-25 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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