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11840 (1986 QR2)
Classification: Main-belt Asteroid          SPK-ID: 2011840
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2934565716780536 5.1975e-08  
a 2.623621519626157 1.9457e-08 au
q 1.8537025430959 1.326e-07 au
i 13.03121840105498 5.5499e-06 deg
node 145.2734672566527 2.6856e-05 deg
peri 213.3556069250856 2.96e-05 deg
M 314.0945778002614 1.769e-05 deg
tp 2457598.430029225852
(2016-Jul-28.93002923)
7.8066e-05 JED
period 1552.209022526155
4.25
1.7267e-05
4.727e-08
d
yr
n .231927527011868 2.58e-09 deg/d
Q 3.393540496156414 2.5167e-08 au
  Orbit Determination Parameters
   # obs. used (total)      845  
   data-arc span      10552 days (28.89 yr)  
   first obs. used      1986-08-01  
   last obs. used      2015-06-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49511  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:08:01  

Additional Information
 Earth MOID = .860388 au 
 Jupiter MOID = 2.0756 au 
 T_jup = 3.306 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.8 mag n/a PDS3 (MPC 36230)  

11840 (1986 QR2)          Discovered 1986-Aug-28 by Debehogne, H. at La Silla
Reference: 19991026/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1986 QR2 = 1992 CG6 = 1998 HD125 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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