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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3009950227054001 7.9212e-08  
a 2.237613445736903 1.4026e-08 AU
q 1.564102935831416 1.7835e-07 AU
i 1.649730942180236 7.5796e-06 deg
node 32.40568694500762 0.00032546 deg
peri 325.9006928880353 0.00032504 deg
M 83.19603361746397 1.9318e-05 deg
tp 2456717.962471151548
(2014-Mar-01.46247115)
6.3808e-05 JED
period 1222.576437395108
3.35
1.1496e-05
3.147e-08
d
yr
n .2944601163482561 2.7687e-09 deg/d
Q 2.911123955642391 1.8248e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      285  
   data-arc span      8892 days (24.34 yr)  
   first obs. used      1990-08-22  
   last obs. used      2014-12-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58944  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:31:37  

Additional Information
 Earth MOID = .56095 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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