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1565 Lemaitre (1948 WA)
Classification: Mars-crossing Asteroid          SPK-ID: 2001565
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3477779622455655 4.2617e-08  
a 2.393300689198864 8.9092e-09 AU
q 1.560963452468376 1.0113e-07 AU
i 21.46362736967006 7.1547e-06 deg
node 261.3646367616472 1.504e-05 deg
peri 115.9482620224913 1.8322e-05 deg
M 330.4340147407062 8.8934e-06 deg
tp 2457111.566779944496
(2015-Mar-30.06677994)
3.3688e-05 JED
period 1352.36625566029
3.70
7.5514e-06
2.067e-08
d
yr
n .2662000759729329 1.4864e-09 deg/d
Q 3.225637925929353 1.2008e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1437  
   data-arc span      24025 days (65.78 yr)  
   first obs. used      1948-11-25  
   last obs. used      2014-09-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .36945  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 13:51:11  

Additional Information
 Earth MOID = .674738 AU 
 T_jup = 3.358 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.5 mag n/a MPO265965  
rotation period rot_per 11.403 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D.; Vander Haagen, G. (2008) Minor Planet Bul. 35, 52.]
SMASSII spectral type spec_B Sq   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1565 Lemaitre (1948 WA)          Discovered 1948-Nov-25 by Arend, S. at Uccle (012)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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