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

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3021808023631146 3.9356e-08  
a 2.237078504824841 5.3365e-09 au
q 1.561076327287594 8.9242e-08 au
i 1.649371784794011 3.5439e-06 deg
node 32.3424841291388 0.00017199 deg
peri 325.9870948639982 0.00017212 deg
M 312.3687128669592 7.5921e-06 deg
tp 2459162.200022729839
(2020-Nov-08.70002273)
2.5946e-05 TDB
period 1222.138045947569
3.35
4.3731e-06
1.197e-08
d
yr
n .2945657417291829 1.054e-09 deg/d
Q 2.913080682362088 6.9491e-09 au
  Orbit Determination Parameters
   # obs. used (total)      680  
   data-arc span      11026 days (30.19 yr)  
   first obs. used      1990-08-22  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52876  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:27:04  

Additional Information
 Earth MOID = .557767 au 
 Jupiter MOID = 2.53804 au 
 T_jup = 3.576 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.6   n/a MPO435852  

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

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