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16474 (1990 QG3)
Classification: Mars-crossing Asteroid          SPK-ID: 2016474
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .300918793440575 9.317e-08  
a 2.236869374537855 1.2321e-08 AU
q 1.56375334126775 2.0966e-07 AU
i 1.649871218041626 8.6885e-06 deg
node 32.41574369575564 0.00034423 deg
peri 325.834792786434 0.00034369 deg
M 24.34556165081155 1.9236e-05 deg
tp 2456717.862597159532
(2014-Mar-01.36259716)
6.4824e-05 JED
period 1221.966675045949
3.35
1.0096e-05
2.764e-08
d
yr
n .2946070521820597 2.4341e-09 deg/d
Q 2.909985407807961 1.6028e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      272  
   data-arc span      8335 days (22.82 yr)  
   first obs. used      1990-08-22  
   last obs. used      2013-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60214  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 18:25:58  

Additional Information
 Earth MOID = .559047 AU 
 T_jup = 3.576 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.6 mag n/a PDS3 (MPO 2844)  

16474 (1990 QG3)          Discovered 1990-Aug-28 by Holt, H. E. at Palomar (675)
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 QG3 = 1995 BM8 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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