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JPL Small-Body Database Browser
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17129 (1999 JM78)
Classification: Main-belt Asteroid          SPK-ID: 2017129
[ 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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03933199391822251 3.5541e-08  
a 2.618537218419278 1.1392e-08 au
q 2.515544928469772 9.221e-08 au
i 15.19942367177812 3.7882e-06 deg
node 134.6525032627274 1.5047e-05 deg
peri 113.5532190471154 5.1292e-05 deg
M 224.6382368272492 4.9339e-05 deg
tp 2459182.442473221003
(2020-Nov-28.94247322)		 0.0002126 TDB
period 1547.699183647564
4.24		 1.01e-05
2.765e-08		 d
yr
n .2326033403671924 1.5179e-09 deg/d
Q 2.721529508368784 1.184e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2192  
   data-arc span      25699 days (70.36 yr)  
   first obs. used      1949-07-28  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44491  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:17:17  

Additional Information
 Earth MOID = 1.53165 au 
 Jupiter MOID = 2.385 au 
 T_jup = 3.355 
[ 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 12.7   n/a MPO337404  
rotation period rot_per 6.2615 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Ditteon, R.; West, J. (2011) Minor Planet Bull. 38, 214-217.]
[Warner, B.D. (2012) Minor Planet Bull. 39, 245-252.]

17129 (1999 JM78)          Discovered 1999-May-13 by LINEAR at Socorro
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 JM78 = 1949 ON 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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