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2548 Leloir (1975 DA)
Classification: Main-belt Asteroid          SPK-ID: 2002548
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1027892167636624 4.2656e-08  
a 2.63212154816775 1.3946e-08 au
q 2.361567835804828 1.0854e-07 au
i 18.15355089148599 4.8697e-06 deg
node 299.454932703002 1.574e-05 deg
peri 291.5621809830226 3.353e-05 deg
M 159.1428478728165 3.1503e-05 deg
tp 2458310.987787808073
(2018-Jul-11.48778781)
0.0001363 TDB
period 1559.758416460343
4.27
1.2397e-05
3.394e-08
d
yr
n .2308049735144051 1.8344e-09 deg/d
Q 2.902675260530672 1.538e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1990  
   data-arc span      25904 days (70.92 yr)  
   first obs. used      1949-02-03  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36802  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 18:37:55  

Additional Information
 Earth MOID = 1.40784 au 
 Jupiter MOID = 2.37531 au 
 T_jup = 3.321 
[ 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 MPO358653  
diameter diameter 10.364 km 0.134 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.412   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

2548 Leloir (1975 DA)          Discovered 1975-Feb-16 by Felix Aguilar Observatory at El Leoncito
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1975 DA = 1949 CE = 1966 BM = 1976 OQ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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