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

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1072430800904173 6.7239e-08  
a 3.170815612923699 2.9928e-08 au
q 2.830767580194977 2.1268e-07 au
i 12.63730800143254 7.7588e-06 deg
node 296.7029572309951 3.2894e-05 deg
peri 171.06574010087 5.0347e-05 deg
M 167.2707706721678 3.6276e-05 deg
tp 2456642.264037392056
(2013-Dec-15.76403739)
0.0002058 JED
period 2062.314564299777
5.65
2.9198e-05
7.994e-08
d
yr
n .1745611490273463 2.4714e-09 deg/d
Q 3.510863645652421 3.3137e-08 au
  Orbit Determination Parameters
   # obs. used (total)      888  
   data-arc span      16901 days (46.27 yr)  
   first obs. used      1969-01-15  
   last obs. used      2015-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51172  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:27:19  

Additional Information
 Earth MOID = 1.84663 au 
 Jupiter MOID = 1.62474 au 
 T_jup = 3.156 
[ 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 12.1 mag n/a MPO279692  
diameter diameter 24.02 km 2.0 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
rotation period rot_per 4.0231 h n/a LCDB (Rev. 2016-February); 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.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]
geometric albedo albedo 0.0584   0.011 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2

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 | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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