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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3475728758595591 3.9434e-08  
a 2.39420015929496 8.6471e-09 au
q 1.562041124545396 9.3139e-08 au
i 21.45671792774824 6.3286e-06 deg
node 261.3105876579581 1.4317e-05 deg
peri 116.0866636116396 1.702e-05 deg
M 130.0494532627988 9.1609e-06 deg
tp 2457111.684307255073
(2015-Mar-30.18430726)
3.301e-05 JED
period 1353.128713525409
3.70
7.3307e-06
2.007e-08
d
yr
n .2660500781644525 1.4413e-09 deg/d
Q 3.226359194044524 1.1653e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1659  
   data-arc span      24617 days (67.40 yr)  
   first obs. used      1948-11-25  
   last obs. used      2016-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .39756  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:34:42  

Additional Information
 Earth MOID = .674365 au 
 Jupiter MOID = 2.55644 au 
 T_jup = 3.357 
[ 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 LCDB (Rev. 2016-February); Warner et al., 2009 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
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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