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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1162922564582196 4.7529e-08  
a 3.125963686942697 1.5347e-08 au
q 2.762438316181675 1.4753e-07 au
i 10.52669839660317 5.6596e-06 deg
node 327.0328659565388 2.3255e-05 deg
peri 237.5765347825342 3.0692e-05 deg
M 184.73998298954 2.1284e-05 deg
tp 2459983.276286143415
(2023-Feb-07.77628614)
0.00012153 TDB
period 2018.71179203705
5.53
1.4866e-05
4.07e-08
d
yr
n .1783315485747124 1.3133e-09 deg/d
Q 3.489489057703719 1.7131e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2175  
   data-arc span      45585 days (124.80 yr)  
   first obs. used      1895-03-18  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44892  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 17:26:29  

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

[ show close-approach data ]
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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