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17827 (1998 HW)
Classification: Main-belt Asteroid          SPK-ID: 2017827
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1616280647141246 3.1476e-08  
a 2.746157632501244 1.1836e-08 au
q 2.302301488960146 8.7456e-08 au
i 14.15377608133875 5.3348e-06 deg
node 188.2931299567314 1.3776e-05 deg
peri 294.2472172524559 2.2181e-05 deg
M 15.57673121149416 1.6262e-05 deg
tp 2458928.578216915169
(2020-Mar-20.07821692)
7.5006e-05 TDB
period 1662.212794134466
4.55
1.0746e-05
2.942e-08
d
yr
n .2165787685369467 1.4002e-09 deg/d
Q 3.190013776042343 1.3749e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1752  
   data-arc span      14017 days (38.38 yr)  
   first obs. used      1981-09-18  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46411  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:13:14  

Additional Information
 Earth MOID = 1.35664 au 
 Jupiter MOID = 1.9934 au 
 T_jup = 3.285 
[ 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 13.2   n/a MPO347663  
diameter diameter 6.238 km 0.273 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.261   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

17827 (1998 HW)          Discovered 1998-Apr-17 by Spacewatch at Kitt Peak
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HW = 1982 VK2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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