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17838 (1998 HJ94)
Classification: Main-belt Asteroid          SPK-ID: 2017838
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .101566783598054 3.9252e-08  
a 3.170299581810831 1.9553e-08 au
q 2.848302450244049 1.1911e-07 au
i 15.85278031906278 4.5258e-06 deg
node 222.6516954718179 1.2496e-05 deg
peri 209.5176288719872 2.2943e-05 deg
M 175.9339460825147 2.0186e-05 deg
tp 2458388.881749733947
(2018-Sep-27.38174973)
0.00011289 TDB
period 2061.811140901991
5.64
1.9074e-05
5.222e-08
d
yr
n .1746037708587165 1.6153e-09 deg/d
Q 3.492296713377613 2.1538e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1919  
   data-arc span      9380 days (25.68 yr)  
   first obs. used      1995-10-14  
   last obs. used      2021-06-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44028  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 04:29:45  

Additional Information
 Earth MOID = 1.87132 au 
 Jupiter MOID = 1.9108 au 
 T_jup = 3.135 
[ 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 13.07   n/a MPO614063  
diameter diameter 14.807 km 0.271 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.067   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17838 (1998 HJ94)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HJ94 = 1995 TJ2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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