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JPL Small-Body Database Browser
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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1030308052681 4.2786e-08  
a 2.632195868967004 1.4133e-08 au
q 2.360998608963967 1.0907e-07 au
i 18.15292399911305 4.953e-06 deg
node 299.4559441704246 1.576e-05 deg
peri 291.6189902216206 3.3523e-05 deg
M 66.73510751931428 3.1421e-05 deg
tp 2458311.347071317420
(2018-Jul-11.84707132)
0.00013609 TDB
period 1559.824479125951
4.27
1.2562e-05
3.439e-08
d
yr
n .2307951983172661 1.8588e-09 deg/d
Q 2.90339312897004 1.5589e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1897  
   data-arc span      25864 days (70.81 yr)  
   first obs. used      1949-02-03  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37328  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:37:02  

Additional Information
 Earth MOID = 1.40696 au 
 Jupiter MOID = 2.37365 au 
 T_jup = 3.321 
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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

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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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