Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3476738155731529 4.0874e-08  
a 2.393448251987337 8.6915e-09 au
q 1.561308965842007 9.6821e-08 au
i 21.46110436799392 6.9648e-06 deg
node 261.3568294314621 1.4477e-05 deg
peri 115.9897833196958 1.7608e-05 deg
M 76.89527760201055 9.1251e-06 deg
tp 2457111.610565679331
(2015-Mar-30.11056568)
3.3495e-05 JED
period 1352.491331050497
3.70
7.3671e-06
2.017e-08
d
yr
n .266175458381965 1.4499e-09 deg/d
Q 3.225587538132668 1.1713e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1522  
   data-arc span      24492 days (67.06 yr)  
   first obs. used      1948-11-25  
   last obs. used      2015-12-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .39217  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:39:34  

Additional Information
 Earth MOID = .674189 au 
 Jupiter MOID = 2.55942 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 LCDB (Rev. 2015-December); 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Feb-11 19:07 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin