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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04472555762009258 3.6244e-08  
a 2.800595953817887 1.3941e-08 au
q 2.675337738114807 1.0434e-07 au
i 1.932378140774866 3.8412e-06 deg
node 243.8311104830561 0.00012417 deg
peri 157.8684690944276 0.00013356 deg
M 340.1648742271488 4.8087e-05 deg
tp 2458694.820603370512
(2019-Jul-30.32060337)
0.00022868 TDB
period 1711.883131079511
4.69
1.2782e-05
3.5e-08
d
yr
n .2102947295081905 1.5702e-09 deg/d
Q 2.925854169520967 1.4564e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1538  
   data-arc span      12057 days (33.01 yr)  
   first obs. used      1986-11-30  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51476  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:21:43  

Additional Information
 Earth MOID = 1.68275 au 
 Jupiter MOID = 2.26261 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 14.1   n/a MPO332983  
rotation period rot_per 5.30 h n/a LCDB (Rev. 2019-January); 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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