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JPL Small-Body Database Browser
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27942 (1997 LL9)
Classification: Main-belt Asteroid          SPK-ID: 2027942
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1959351860819978 3.1076e-08  
a 2.343916808265512 8.2759e-09 au
q 1.884661032277286 7.1628e-08 au
i 3.071811157906916 3.7972e-06 deg
node 152.8654039676456 6.7303e-05 deg
peri 116.1078711580038 6.8046e-05 deg
M 18.42934170853466 9.5071e-06 deg
tp 2458533.400537886262
(2019-Feb-18.90053789)
3.4573e-05 TDB
period 1310.725404248103
3.59
6.9419e-06
1.901e-08
d
yr
n .2746570706825614 1.4546e-09 deg/d
Q 2.803172584253737 9.8975e-09 au
  Orbit Determination Parameters
   # obs. used (total)      741  
   data-arc span      9180 days (25.13 yr)  
   first obs. used      1994-09-05  
   last obs. used      2019-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59054  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 05:03:05  

Additional Information
 Earth MOID = .870627 au 
 Jupiter MOID = 2.29718 au 
 T_jup = 3.534 
[ 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 MPO435957  

27942 (1997 LL9)          Discovered 1997-Jun-07 by Elst, E. W. at La Silla
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 LL9 = 1994 RQ3 = 2000 DY18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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