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136793 (1997 AQ18)
Classification: Apollo [NEO]          SPK-ID: 2136793
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 93 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4653390118604205 6.8821e-08  
a 1.147073296323303 2.6745e-09 au
q .6132953420807417 7.9697e-08 au
i 17.37447789379185 7.9468e-06 deg
node 296.2675016532665 1.3945e-05 deg
peri 37.00932301405118 1.6724e-05 deg
M 108.8672085434427 1.4725e-05 deg
tp 2458864.800024948068
(2020-Jan-16.30002495)
1.8267e-05 TDB
period 448.7300783431181
1.23
1.5694e-06
4.297e-09
d
yr
n .8022640276962417 2.8059e-09 deg/d
Q 1.680851250565863 3.9191e-09 au
  Orbit Determination Parameters
   # obs. used (total)      385  
   data-arc span      8086 days (22.14 yr)  
   first obs. used      1997-01-15  
   last obs. used      2019-03-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56267  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-21 06:09:39  

Additional Information
 Earth MOID = .186636 au 
 Jupiter MOID = 3.71836 au 
 T_jup = 5.329 
[ 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 18.3   n/a MPO436674  
SMASSII spectral type spec_B C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

136793 (1997 AQ18)          Discovered 1997-Jan-15 by Farra d'Isonzo at Farra d'Isonzo
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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