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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2587284677453422 3.7118e-08  
a 2.395167208332575 7.7094e-09 au
q 1.775469266526799 8.8232e-08 au
i 11.35567341627586 3.7297e-06 deg
node 164.2603347435504 1.8336e-05 deg
peri 230.4627629552099 1.9094e-05 deg
M 137.476946603793 6.3464e-06 deg
tp 2458683.453551104527
(2019-Jul-18.95355110)
2.2751e-05 TDB
period 1353.948616118265
3.71
6.537e-06
1.79e-08
d
yr
n .2658889678044876 1.2837e-09 deg/d
Q 3.01486515013835 9.704e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1699  
   data-arc span      11522 days (31.55 yr)  
   first obs. used      1989-09-05  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45822  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:39:22  

Additional Information
 Earth MOID = .802206 au 
 Jupiter MOID = 2.48707 au 
 T_jup = 3.458 
[ 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 14.26   n/a MPCxxxxx  
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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