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74418 (1999 AQ11)
Classification: Main-belt Asteroid          SPK-ID: 2074418
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 .1483813095924348 4.4765e-08  
a 3.153076954121867 2.416e-08 au
q 2.685219266423539 1.4178e-07 au
i 1.495046101317797 5.006e-06 deg
node 149.5013897118435 0.00017882 deg
peri 27.31576850096185 0.00017949 deg
M 251.0786584811614 1.6825e-05 deg
tp 2459619.243661767949
(2022-Feb-08.74366177)
9.9385e-05 TDB
period 2045.032820293863
5.60
2.3504e-05
6.435e-08
d
yr
n .1760362945902597 2.0233e-09 deg/d
Q 3.620934641820195 2.7745e-08 au
  Orbit Determination Parameters
   # obs. used (total)      557  
   data-arc span      7761 days (21.25 yr)  
   first obs. used      1998-10-28  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5637  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:15:54  

Additional Information
 Earth MOID = 1.68958 au 
 Jupiter MOID = 1.34078 au 
 T_jup = 3.189 
[ 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 15.0   n/a MPO375514  
diameter diameter 5.473 km 0.247 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.065   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74418 (1999 AQ11)          Discovered 1999-Jan-07 by Spacewatch at Kitt Peak
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 AQ11 = 2000 HL51 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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