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17749 (1998 DW1)
Classification: Main-belt Asteroid          SPK-ID: 2017749
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2723732946273188 3.7746e-08  
a 2.394234144146552 1.156e-08 au
q 1.742108702196137 8.9952e-08 au
i 7.289013113602912 4.3423e-06 deg
node 94.88694025583644 3.4173e-05 deg
peri 260.4439213374786 3.5241e-05 deg
M 136.3044558617734 1.245e-05 deg
tp 2458488.162777605175
(2019-Jan-04.66277761)
4.4284e-05 TDB
period 1353.157524425903
3.70
9.8e-06
2.683e-08
d
yr
n .2660444135302986 1.9268e-09 deg/d
Q 3.046359586096968 1.4708e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1154  
   data-arc span      9482 days (25.96 yr)  
   first obs. used      1994-01-21  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53468  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 00:33:54  

Additional Information
 Earth MOID = .755572 au 
 Jupiter MOID = 2.43368 au 
 T_jup = 3.468 
[ 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 14.5   n/a MPO492945  
diameter diameter 4.826 km 0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.191   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17749 (1998 DW1)          Discovered 1998-Feb-19 by Farra d'Isonzo at Farra d'Isonzo
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 DW1 = 1999 JX69 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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