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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 ]

[ 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 .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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456477.5 (2013-Jul-04.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1665845029715142 3.5892e-08  
q 1.882074127693509 8.229e-08 au
tp 2456420.085798553685
(2013-May-07.58579855)
4.5823e-05 TDB
node 267.1307991255167 6.4975e-05 deg
peri 27.40709416942202 6.6173e-05 deg
i 3.673250269831486 4.0334e-06 deg
  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
 Jupiter MOID = 2.54845 au 
 T_jup = 3.601 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.288240076556227E-15 -2.944140283570551E-15 8.519038488585604E-14 -6.910869049276801E-15 2.532058218474544E-14 -2.830100510877468E-16
q -2.944140283570551E-15 6.771644192629483E-15 -1.473632427388924E-13 1.639952764909588E-14 -4.613086979585959E-14 7.558525837337401E-16
tp 8.519038488585604E-14 -1.473632427388924E-13 2.09972413156939E-9 5.134088639828946E-12 5.920946798873904E-10 -2.468324176513864E-13
node -6.910869049276801E-15 1.639952764909588E-14 5.134088639828946E-12 4.221810858368665E-9 -4.210839535004261E-9 -1.033449685900753E-12
peri 2.532058218474544E-14 -4.613086979585959E-14 5.920946798873904E-10 -4.210839535004261E-9 4.378922317374238E-9 9.63669411526788E-13
i -2.830100510877468E-16 7.558525837337401E-16 -2.468324176513864E-13 -1.033449685900753E-12 9.63669411526788E-13 1.626868920567985E-11

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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