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18005 (1999 JD91)
Classification: Main-belt Asteroid          SPK-ID: 2018005
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2585868873200011 3.7195e-08  
a 2.395497466656569 7.8113e-09 au
q 1.776053233170899 8.8428e-08 au
i 11.35446769676927 3.762e-06 deg
node 164.2601671674377 1.868e-05 deg
peri 230.4878528214079 1.9494e-05 deg
M 84.28642863193309 6.2645e-06 deg
tp 2458683.435840787634
(2019-Jul-18.93584079)
2.2938e-05 TDB
period 1354.228660166613
3.71
6.6239e-06
1.814e-08
d
yr
n .2658339840154532 1.3003e-09 deg/d
Q 3.014941700142239 9.8312e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1643  
   data-arc span      11191 days (30.64 yr)  
   first obs. used      1989-09-05  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45916  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:44:11  

Additional Information
 Earth MOID = .803983 au 
 Jupiter MOID = 2.48585 au 
 T_jup = 3.457 
[ 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 14.2   n/a MPO412320  
diameter diameter 6.899 km 0.164 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.093   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18005 (1999 JD91)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 JD91 = 1989 RX1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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