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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3478362423602512 4.6689e-08  
a 2.393288088786518 9.3805e-09 AU
q 1.560815753097468 1.1016e-07 AU
i 21.46484065512857 7.2046e-06 deg
node 261.366174537603 1.6508e-05 deg
peri 115.9539793971794 1.9973e-05 deg
M 277.1940915336427 8.8321e-06 deg
tp 2457111.563977804290
(2015-Mar-30.06397780)
3.3865e-05 JED
period 1352.355575629499
3.70
7.9508e-06
2.177e-08
d
yr
n .2662021782491828 1.5651e-09 deg/d
Q 3.225760424475567 1.2643e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1392  
   data-arc span      23932 days (65.52 yr)  
   first obs. used      1948-11-25  
   last obs. used      2014-06-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .36445  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:17:59  

Additional Information
 Earth MOID = .673856 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. 2013-Sep-12) 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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