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16894 (1998 DP9)
Classification: Main-belt Asteroid          SPK-ID: 2016894
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .049893029437474 2.104e-08  
a 2.983398134251186 1.4718e-08 au
q 2.834547363315287 6.1759e-08 au
i 11.42072022507636 5.6656e-07 deg
node 78.93568005469854 3.4353e-06 deg
peri 73.95289455791945 1.7749e-05 deg
M 170.152458544485 2.0156e-05 deg
tp 2458310.887297528943
(2018-Jul-11.38729753)
0.00010393 TDB
period 1882.197739774949
5.15
1.3928e-05
3.813e-08
d
yr
n .1912657700051455 1.4153e-09 deg/d
Q 3.132248905187086 1.5452e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2103  
   data-arc span      10000 days (27.38 yr)  
   first obs. used      1993-06-23  
   last obs. used      2020-11-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4941  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:45:49  

Additional Information
 Earth MOID = 1.87267 au 
 Jupiter MOID = 1.96089 au 
 T_jup = 3.227 
[ 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 13.22   n/a E2021B10  
diameter diameter 8.710 km 0.229 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.147   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

16894 (1998 DP9)          Discovered 1998-Feb-22 by JPL/GEODSS NEAT at Haleakala
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 DP9 = 1996 XN33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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