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48727 (1997 AL18)
Classification: Main-belt Asteroid          SPK-ID: 2048727
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1075249310193154 3.9637e-08  
a 2.272148887168386 9.2e-09 au
q 2.027836234809991 8.9263e-08 au
i 10.16877454357913 4.5329e-06 deg
node 111.2611715772339 2.4384e-05 deg
peri 180.3302260622854 3.2577e-05 deg
M 15.25780206161848 2.1227e-05 deg
tp 2458547.479590015604
(2019-Mar-04.97959002)
7.3728e-05 TDB
period 1250.989331051645
3.43
7.5979e-06
2.08e-08
d
yr
n .2877722383910067 1.7478e-09 deg/d
Q 2.516461539526781 1.0189e-08 au
  Orbit Determination Parameters
   # obs. used (total)      873  
   data-arc span      8325 days (22.79 yr)  
   first obs. used      1997-01-15  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52549  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:38:17  

Additional Information
 Earth MOID = 1.01094 au 
 Jupiter MOID = 2.63926 au 
 T_jup = 3.583 
[ 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 15.7   n/a MPO337647  
rotation period rot_per 3.228 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

48727 (1997 AL18)          Discovered 1997-Jan-15 by Klet at Klet
Reference: 20021120/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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