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400 Ducrosa (A895 EC)
Classification: Main-belt Asteroid          SPK-ID: 2000400
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1162922564407293 4.7528e-08  
a 3.12596368680914 1.5333e-08 au
q 2.762438316118324 1.4753e-07 au
i 10.52669837685456 5.651e-06 deg
node 327.03286602 2.3241e-05 deg
peri 237.576534933865 3.0658e-05 deg
M 184.7399828435861 2.1266e-05 deg
tp 2459983.276286898873
(2023-Feb-07.77628690)
0.00012145 TDB
period 2018.711791907675
5.53
1.4853e-05
4.067e-08
d
yr
n .1783315485861413 1.3121e-09 deg/d
Q 3.489489057499957 1.7116e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2199  
   data-arc span      45613 days (124.88 yr)  
   first obs. used      1895-03-18  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44749  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:26:22  

Additional Information
 Earth MOID = 1.77779 au 
 Jupiter MOID = 1.59404 au 
 T_jup = 3.178 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.5   n/a MPO265957  
diameter diameter 36.001 km 0.390 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 6.87 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2005) Minor Planet Bull. 32, 54-58.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
geometric albedo albedo 0.112   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

400 Ducrosa (A895 EC)          Discovered 1895-Mar-15 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A895 EC = 1939 BH = 1950 BC1 = 1950 BQ = 1950 CB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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