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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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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 50 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .116045365910631 2.1114e-08  
a 3.126753627012401 1.3081e-08 au
q 2.763908358253354 7.1216e-08 au
i 10.52650517421395 6.0676e-07 deg
node 327.0295178807638 5.2866e-06 deg
peri 237.5172618194145 1.1959e-05 deg
M 220.4668891683441 1.4041e-05 deg
tp 2459983.233094171377
(2023-Feb-07.73309417)
8.0977e-05 TDB
period 2019.477041844661
5.53
1.2673e-05
3.47e-08
d
yr
n .1782639725733962 1.1187e-09 deg/d
Q 3.489598895771447 1.46e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2837  
   data-arc span      46025 days (126.01 yr)  
   first obs. used      1895-03-18  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40434  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:20:48  

Additional Information
 Earth MOID = 1.77851 au 
 Jupiter MOID = 1.59273 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 10.65   n/a MPCxxxxx  
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 6.8678 h n/a LCDB (Rev. 2020-October); 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.]
[Pilcher, F. (2020) Minor Planet Bull. 47, 34-36.]
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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