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186416 (2002 QQ99)
Classification: Main-belt Asteroid          SPK-ID: 2186416
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1242077623891581 4.6362e-08  
a 2.317865313655025 9.3571e-09 au
q 2.02996844952649 1.0902e-07 au
i 3.779195751476835 5.1391e-06 deg
node 80.65722063471543 7.678e-05 deg
peri 356.65944943 8.1804e-05 deg
M 34.84040583312926 2.5847e-05 deg
tp 2459271.758366779489
(2021-Feb-26.25836678)
9.2552e-05 TDB
period 1288.934123628445
3.53
7.805e-06
2.137e-08
d
yr
n .2793005425184751 1.6913e-09 deg/d
Q 2.60576217778356 1.0519e-08 au
  Orbit Determination Parameters
   # obs. used (total)      440  
   data-arc span      7737 days (21.18 yr)  
   first obs. used      1999-12-08  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57265  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 02:45:24  

Additional Information
 Earth MOID = 1.04522 au 
 Jupiter MOID = 2.60864 au 
 T_jup = 3.567 
[ 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 17.14   n/a MPCxxxxx  

186416 (2002 QQ99)          Discovered 2002-Aug-18 by NEAT at Palomar
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

Alternate Designations
 2002 QQ99 = 2004 CX76 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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