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JPL Small-Body Database Browser
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35780 (1999 JR18)
Classification: Main-belt Asteroid          SPK-ID: 2035780
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2180162956785322 5.5158e-08  
a 2.559614157921616 1.4301e-08 au
q 2.00157656084522 1.4524e-07 au
i 4.774217318158056 6.9461e-06 deg
node 337.4343958480741 4.2421e-05 deg
peri 324.9677371928854 4.4787e-05 deg
M 251.9888816972158 1.2102e-05 deg
tp 2459049.272404949127
(2020-Jul-18.77240495)
4.9861e-05 TDB
period 1495.754032735732
4.10
1.2536e-05
3.432e-08
d
yr
n .2406812832331533 2.0171e-09 deg/d
Q 3.117651754998012 1.7419e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1086  
   data-arc span      7833 days (21.45 yr)  
   first obs. used      1997-10-28  
   last obs. used      2019-04-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55779  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 01:48:42  

Additional Information
 Earth MOID = .987832 au 
 Jupiter MOID = 2.13696 au 
 T_jup = 3.397 
[ 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 14.9   n/a MPO337552  

35780 (1999 JR18)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20020227/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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