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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1027892142805857 4.2578e-08  
a 2.63212154795904 1.3906e-08 au
q 2.361567842153331 1.0837e-07 au
i 18.15355074276366 4.8402e-06 deg
node 299.4549333733175 1.5715e-05 deg
peri 291.5621817621948 3.3399e-05 deg
M 159.1428464394401 3.141e-05 deg
tp 2458310.987794100420
(2018-Jul-11.48779410)
0.00013587 TDB
period 1559.758416274825
4.27
1.2361e-05
3.384e-08
d
yr
n .2308049735418571 1.8291e-09 deg/d
Q 2.902675253764748 1.5336e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2041  
   data-arc span      26112 days (71.49 yr)  
   first obs. used      1949-02-03  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36652  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:53:25  

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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