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18007 (1999 JK97)
Classification: Main-belt Asteroid          SPK-ID: 2018007
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2049540650259266 2.4268e-08  
a 2.569550405827715 1.0118e-08 au
q 2.042910604864305 6.5955e-08 au
i 12.31370023754676 4.3678e-07 deg
node 113.3718833216761 5.3922e-06 deg
peri 258.0641804551487 6.0438e-06 deg
M 331.1628294581842 7.4405e-06 deg
tp 2459321.013107233328
(2021-Apr-16.51310723)
3.1508e-05 TDB
period 1504.472102805212
4.12
8.8865e-06
2.433e-08
d
yr
n .2392865905115492 1.4134e-09 deg/d
Q 3.096190206791124 1.2192e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1842  
   data-arc span      14539 days (39.81 yr)  
   first obs. used      1981-01-08  
   last obs. used      2020-10-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5202  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:19:51  

Additional Information
 Earth MOID = 1.08192 au 
 Jupiter MOID = 2.4806 au 
 T_jup = 3.369 
[ 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 13.62   n/a E2021B10  
diameter diameter 5.161 km 0.101 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.447 h n/a LCDB (Rev. 2020-October); 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:
[Aznar, A.M. (2017) Minor Planet Bull. 44, 276-279.]
geometric albedo albedo 0.152   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18007 (1999 JK97)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 JK97 = 1981 AM2 = 1989 AN8 = 1990 HX1 = 1998 FU84 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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