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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02343253330689992 1.6004e-08  
a 3.111965388705302 1.4886e-08 au
q 3.039044156084546 5.2316e-08 au
i 9.443324508618236 5.2556e-07 deg
node 168.8841596183265 2.2611e-06 deg
peri 103.466883111646 3.2139e-05 deg
M 286.3797986845769 3.0765e-05 deg
tp 2459610.557787389042
(2022-Jan-31.05778739)
0.00017073 TDB
period 2005.167071298529
5.49
1.4388e-05
3.939e-08
d
yr
n .1795361619253338 1.2882e-09 deg/d
Q 3.184886621326059 1.5235e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2519  
   data-arc span      14245 days (39.00 yr)  
   first obs. used      1982-03-15  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47531  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:46:14  

Additional Information
 Earth MOID = 2.03901 au 
 Jupiter MOID = 1.83783 au 
 T_jup = 3.197 
[ 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 12.81   n/a E2021B10  
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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