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17974 (1999 JL52)
Classification: Main-belt Asteroid          SPK-ID: 2017974
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1660612707284919 3.5804e-08  
a 2.258445107962646 8.0287e-09 au
q 1.883404843463823 8.2049e-08 au
i 3.669641041152869 4.0302e-06 deg
node 267.021635314917 6.5084e-05 deg
peri 27.70590324611463 6.629e-05 deg
M 29.00248893287861 1.4495e-05 deg
tp 2458900.627595733509
(2020-Feb-21.12759573)
4.9697e-05 TDB
period 1239.688966665802
3.39
6.6106e-06
1.81e-08
d
yr
n .2903954214969227 1.5485e-09 deg/d
Q 2.633485372461469 9.362e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1809  
   data-arc span      12383 days (33.90 yr)  
   first obs. used      1986-09-09  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48708  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:17:06  

Additional Information
 Earth MOID = .868262 au 
 Jupiter MOID = 2.54845 au 
 T_jup = 3.601 
[ 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 14.1   n/a MPO365468  
diameter diameter 4.000 km 0.377 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 6.834 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.304   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

17974 (1999 JL52)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 JL52 = 1986 RQ10 = 1989 MQ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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