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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1531780828816245 3.8343e-08  
a 2.304135744343509 7.241e-09 au
q 1.951192648325945 8.8514e-08 au
i 5.963670719830177 3.8065e-06 deg
node 208.3259315763455 3.7656e-05 deg
peri 135.0100066516343 3.927e-05 deg
M 11.16331775168015 1.1211e-05 deg
tp 2458560.885762169718
(2019-Mar-18.38576217)
3.9736e-05 TDB
period 1277.498852592916
3.50
6.022e-06
1.649e-08
d
yr
n .2818006444931943 1.3284e-09 deg/d
Q 2.657078840361072 8.3501e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1282  
   data-arc span      8727 days (23.89 yr)  
   first obs. used      1996-01-15  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53007  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 01:43:07  

Additional Information
 Earth MOID = .948423 au 
 Jupiter MOID = 2.75765 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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