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17685 (1997 AJ19)
Classification: Main-belt Asteroid          SPK-ID: 2017685
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0451464949701063 3.4174e-08  
a 2.801146254951525 1.2047e-08 au
q 2.674684319641824 9.6131e-08 au
i 1.93207577869898 3.3998e-06 deg
node 243.8215688152067 0.00011267 deg
peri 157.6785359243801 0.00012069 deg
M 106.4745259422647 4.2454e-05 deg
tp 2458694.039803928378
(2019-Jul-29.53980393)
0.0002017 TDB
period 1712.387718773683
4.69
1.1047e-05
3.025e-08
d
yr
n .210232762156115 1.3563e-09 deg/d
Q 2.927608190261226 1.2591e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1782  
   data-arc span      12524 days (34.29 yr)  
   first obs. used      1986-11-30  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49909  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:10:13  

Additional Information
 Earth MOID = 1.68159 au 
 Jupiter MOID = 2.26077 au 
 T_jup = 3.323 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.15   n/a E2021B10  
rotation period rot_per 5.30 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.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]

17685 (1997 AJ19)          Discovered 1997-Jan-13 by Okuni, T. at Nanyo
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 AJ19 = 1986 WS8 = 1998 HB61 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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