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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 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1902-Dec-30 03:32 00:02 Jupiter 1.75328256581914 1.75328136803419 1.75328376361424 3.84576979203717 3.71802796423921 2416113.647552334 2.12211883932543 224.270045547788 5.01342752514217 75.949488340635 11324566.8040007 T 50 CATAB v2.0g-lin.ifort 2021-May-03 18:21:43 2021-May-03 18:21
1965-Nov-18 15:12 00:01 Jupiter 1.99552652040501 1.99552605486835 1.99552698594189 3.3262694974673 3.1961144288861 2439083.133201048 1.0524445699101 44.5764219031151 6.46217429373515 73.5267187633386 11738365.0270614 T 50 CATAB v2.0g-lin.ifort 2021-May-03 18:21:43 2021-May-03 18:21
1975-Dec-21 13:27 < 00:01 Jupiter 1.67779520999592 1.67779492156626 1.67779549842739 2.11926696459481 1.86590654891531 2442768.060387310 0.890785722106172 137.943856175385 10.3483290176619 74.7674121931767 9450805.13369315 T 50 CATAB v2.0g-lin.ifort 2021-May-03 18:21:43 2021-May-03 18:21
1986-Mar-31 02:10 < 00:01 Jupiter 1.71899717676214 1.71899684789733 1.71899750562783 3.73514689966926 3.60081072701238 2446520.590075759 0.528095088238425 69.5184705350749 4.58248446041292 78.827307483059 11912751.8899735 T 50 CATAB v2.0g-lin.ifort 2021-May-03 18:21:43 2021-May-03 18:21
2059-Apr-12 14:31 00:01 Jupiter 1.71102900883759 1.7110286470805 1.71102937059478 1.79020905430389 1.48821189379395 2473196.104909403 1.09312237854388 54.3588461255208 25.3131901631827 31.7784939445986 8376772.24224241 T 50 CATAB v2.0g-lin.ifort 2021-May-03 18:21:43 2021-May-03 18:21
2069-Jul-03 11:28 00:01 Jupiter 1.68132409142976 1.6813236905322 1.68132449232875 3.55410158439556 3.40940934073951 2476930.977616863 1.13566695061618 85.0530773497513 4.61723632625672 79.5106944336209 8679913.88007943 T 50 CATAB v2.0g-lin.ifort 2021-May-03 18:21:43 2021-May-03 18:21
2142-Aug-08 18:45 00:03 Jupiter 1.74715181429767 1.74715094965274 1.74715267894559 1.63911112656171 1.3103745626387 2503629.281562985 3.12868108636469 143.991943803669 22.3480856156755 85.7332097028553 7016942.8829293 T 50 CATAB v2.0g-lin.ifort 2021-May-03 18:21:43 2021-May-03 18:21
2152-Oct-06 14:45 00:03 Jupiter 1.66555484836301 1.66555421002253 1.66555548670501 3.33559851621239 3.17948296835904 2507341.114579670 2.81608740974685 99.7920740758027 5.96730083879532 80.0757838311317 2369080.28568859 T 50 CATAB v2.0g-lin.ifort 2021-May-03 18:21:43 2021-May-03 18:21

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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