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16907 (1998 DS29)
Classification: Main-belt Asteroid          SPK-ID: 2016907
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02337781944656212 1.606e-08  
a 3.111313174625973 1.3688e-08 au
q 3.038577456987857 5.2352e-08 au
i 9.443833219199535 5.2501e-07 deg
node 168.8869522578489 2.261e-06 deg
peri 103.9838850228747 3.1998e-05 deg
M 321.0622408371738 3.0598e-05 deg
tp 2459613.311579162055
(2022-Feb-02.81157916)
0.00017004 TDB
period 2004.536731863507
5.49
1.3228e-05
3.622e-08
d
yr
n .179592618223228 1.1851e-09 deg/d
Q 3.184048892264089 1.4008e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2746  
   data-arc span      14348 days (39.28 yr)  
   first obs. used      1982-03-15  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45985  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 04:15:37  

Additional Information
 Earth MOID = 2.03998 au 
 Jupiter MOID = 1.83819 au 
 T_jup = 3.198 
[ 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 12.82   n/a MPCxxxxx  
diameter diameter 9.871 km 0.138 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.55549 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.165   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

16907 (1998 DS29)          Discovered 1998-Feb-28 by Spacewatch at Kitt Peak
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1998 DS29 = 1982 EG = 1999 JA71 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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