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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09810896324517059 3.5507e-08  
a 3.012331877308511 1.1864e-08 au
q 2.716795119875395 1.0679e-07 au
i 9.964206448972039 3.9823e-06 deg
node 173.4861595446703 2.2712e-05 deg
peri 164.4087866554143 3.0587e-05 deg
M 175.4448681460328 2.123e-05 deg
tp 2458069.840484867703
(2017-Nov-12.34048487)
0.00011215 TDB
period 1909.645058234225
5.23
1.1282e-05
3.089e-08
d
yr
n .1885167080907056 1.1137e-09 deg/d
Q 3.307868634741628 1.3028e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2988  
   data-arc span      46517 days (127.36 yr)  
   first obs. used      1892-09-25  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40764  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:24:43  

Additional Information
 Earth MOID = 1.7097 au 
 Jupiter MOID = 2.11323 au 
 T_jup = 3.219 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456220.5 (2012-Oct-20.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09443217390971204 3.4967e-08  
q 2.727606308849772 1.0447e-07 au
tp 2456143.958372548569
(2012-Aug-04.45837255)
0.00011802 TDB
node 173.7601880912398 2.2836e-05 deg
peri 161.6463784034552 3.1379e-05 deg
i 9.93068951283202 3.9727e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2988  
   data-arc span      46517 days (127.36 yr)  
   first obs. used      1892-09-25  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40764  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:24:43  

Additional Information
 Jupiter MOID = 2.11323 au 
 T_jup = 3.219 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.222662046919577E-15 -3.634220044932139E-15 1.276182758299751E-13 5.119161143998116E-15 7.649267413338983E-15 1.022737756740123E-15
q -3.634220044932139E-15 1.0914775558806E-14 -3.382100704831853E-13 -1.56180958090404E-14 -1.529844527550394E-14 -2.406107981922303E-15
tp 1.276182758299751E-13 -3.382100704831853E-13 1.392792964531352E-8 4.116110678472876E-12 2.55996590775993E-9 6.846084326725045E-14
node 5.119161143998116E-15 -1.56180958090404E-14 4.116110678472876E-12 5.214755165120535E-10 -5.128740898275168E-10 1.157030337030361E-12
peri 7.649267413338983E-15 -1.529844527550394E-14 2.55996590775993E-9 -5.128740898275168E-10 9.846208421352841E-10 -1.212053111758869E-12
i 1.022737756740123E-15 -2.406107981922303E-15 6.846084326725045E-14 1.157030337030361E-12 -1.212053111758869E-12 1.578247002536957E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.4   n/a MPO502156 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. 2019-August); 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]
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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