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JPL Small-Body Database Browser
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74554 (1999 LG1)
Classification: Inner Main-belt Asteroid          SPK-ID: 2074554
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08422778443671199 5.113e-08  
a 1.961545496940355 8.2115e-09 au
q 1.79632886566126 9.7742e-08 au
i 24.91225261272628 4.8032e-06 deg
node 110.281803738264 1.3778e-05 deg
peri 230.0182698317179 3.444e-05 deg
M 346.5670737936672 3.1813e-05 deg
tp 2458637.942439244660
(2019-Jun-03.44243924)
8.8683e-05 TDB
period 1003.450619845069
2.75
6.301e-06
1.725e-08
d
yr
n .3587620485555965 2.2528e-09 deg/d
Q 2.126762128219451 8.9032e-09 au
  Orbit Determination Parameters
   # obs. used (total)      703  
   data-arc span      7503 days (20.54 yr)  
   first obs. used      1999-05-14  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54919  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 06:48:56  

Additional Information
 Earth MOID = .818974 au 
 Jupiter MOID = 3.15306 au 
 T_jup = 3.762 
[ 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 16.0   n/a MPO436304  
diameter diameter 1.217 km 0.186 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.571   0.192 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74554 (1999 LG1)          Discovered 1999-Jun-07 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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