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16786 (1997 AT1)
Classification: Main-belt Asteroid          SPK-ID: 2016786
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .106356397315994 2.1152e-08  
a 3.170957766120502 1.8086e-08 au
q 2.833706122074753 6.965e-08 au
i 12.63539945533259 9.3895e-07 deg
node 296.679592976845 9.4575e-06 deg
peri 170.5160505548856 9.3146e-06 deg
M 86.9343760480302 1.1505e-05 deg
tp 2458702.449759567675
(2019-Aug-06.94975957)
6.4684e-05 TDB
period 2062.453251594938
5.65
1.7646e-05
4.831e-08
d
yr
n .1745494108637878 1.4934e-09 deg/d
Q 3.508209410166251 2.001e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1981  
   data-arc span      19043 days (52.14 yr)  
   first obs. used      1969-01-15  
   last obs. used      2021-03-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41417  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:41:35  

Additional Information
 Earth MOID = 1.85108 au 
 Jupiter MOID = 1.6217 au 
 T_jup = 3.156 
[ 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 12.26   n/a E2021B10  
diameter diameter 24.595 km 0.419 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.023 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.046   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

16786 (1997 AT1)          Discovered 1997-Jan-02 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 AT1 = 1952 BC2 = 1969 AF1 = 1979 YH = 1990 WZ13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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