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JPL Small-Body Database Browser
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27939 (1997 LL2)
Classification: Main-belt Asteroid          SPK-ID: 2027939
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1533728010578333 3.4963e-08  
a 2.304567552437665 7.0142e-09 au
q 1.951109571693305 8.0035e-08 au
i 5.963015276745438 3.5706e-06 deg
node 208.3190719063855 3.5934e-05 deg
peri 135.0681938247382 3.7584e-05 deg
M 123.7983181566652 1.1307e-05 deg
tp 2458561.064807191204
(2019-Mar-18.56480719)		 3.9608e-05 TDB
period 1277.85798520276
3.50		 5.8339e-06
1.597e-08		 d
yr
n .2817214464899072 1.2862e-09 deg/d
Q 2.658025533182024 8.09e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1372  
   data-arc span      8780 days (24.04 yr)  
   first obs. used      1996-01-15  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51869  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 01:13:25  

Additional Information
 Earth MOID = .949251 au 
 Jupiter MOID = 2.76006 au 
 T_jup = 3.566 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0   n/a MPO347730  
diameter diameter 2.983 km 0.586 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.239   0.100 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27939 (1997 LL2)          Discovered 1997-Jun-05 by Spacewatch at Kitt Peak
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 LL2 = 1996 AF12 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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