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2277 Moreau (1950 DS)
Classification: Main-belt Asteroid          SPK-ID: 2002277
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1243308649903846 3.9348e-08  
a 2.600886575649672 1.1281e-08 au
q 2.277516097957269 1.0441e-07 au
i 11.55342267473711 3.767e-06 deg
node 105.0161576480969 2.036e-05 deg
peri 70.64464262586485 2.5367e-05 deg
M 252.4093282732955 1.6945e-05 deg
tp 2459458.381044346144
(2021-Aug-31.88104435)
7.3366e-05 TDB
period 1532.07683639453
4.19
9.9676e-06
2.729e-08
d
yr
n .234975160153975 1.5287e-09 deg/d
Q 2.924257053342076 1.2683e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2110  
   data-arc span      25552 days (69.96 yr)  
   first obs. used      1950-02-18  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42203  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:17:10  

Additional Information
 Earth MOID = 1.31387 au 
 Jupiter MOID = 2.13872 au 
 T_jup = 3.375 
[ 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 12.0   n/a MPO502175  
diameter diameter 11.654 km 0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 12. h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2013) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.185   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2277 Moreau (1950 DS)          Discovered 1950-Feb-18 by Arend, S. at Uccle
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1950 DS = 1978 YB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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