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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1014530515445641 4.0971e-08  
a 3.17121951303453 2.1391e-08 au
q 2.84948961631951 1.2312e-07 au
i 15.85027015876812 4.8082e-06 deg
node 222.6534233035845 1.4992e-05 deg
peri 209.7235303290245 2.8237e-05 deg
M 106.5692629117122 2.3104e-05 deg
tp 2458389.885172905359
(2018-Sep-28.38517291)
0.00013222 TDB
period 2062.708624870409
5.65
2.0871e-05
5.714e-08
d
yr
n .174527800804933 1.7659e-09 deg/d
Q 3.492949409749549 2.3561e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1602  
   data-arc span      8963 days (24.54 yr)  
   first obs. used      1995-10-14  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45915  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:41:49  

Additional Information
 Earth MOID = 1.87299 au 
 Jupiter MOID = 1.90842 au 
 T_jup = 3.135 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457094.5 (2015-Mar-13.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .102212691258369 4.0811e-08  
q 2.846501352666594 1.2265e-07 au
tp 2456330.826752846364
(2013-Feb-07.32675285)
0.00013322 TDB
node 222.6814983654999 1.499e-05 deg
peri 210.4449372104266 2.8152e-05 deg
i 15.85251060159746 4.8087e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1602  
   data-arc span      8963 days (24.54 yr)  
   first obs. used      1995-10-14  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45915  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:41:49  

Additional Information
 Jupiter MOID = 1.90842 au 
 T_jup = 3.135 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.665564478127707E-15 -4.955358501978605E-15 -1.654870393891017E-12 6.206011242645527E-15 -2.951401900407394E-13 -1.482721295549871E-15
q -4.955358501978605E-15 1.504368265301028E-14 4.830918216493373E-12 -2.005279381314826E-14 8.841015081536739E-13 5.816458247817278E-15
tp -1.654870393891017E-12 4.830918216493373E-12 1.774820116059036E-8 -1.187796274029724E-11 3.190963522019062E-9 2.988285974845367E-12
node 6.206011242645527E-15 -2.005279381314826E-14 -1.187796274029724E-11 2.24714464021122E-10 -2.181353953123047E-10 -1.550579140385131E-11
peri -2.951401900407394E-13 8.841015081536739E-13 3.190963522019062E-9 -2.181353953123047E-10 7.925504806589532E-10 1.563475349849851E-11
i -1.482721295549871E-15 5.816458247817278E-15 2.988285974845367E-12 -1.550579140385131E-11 1.563475349849851E-11 2.312365069904263E-11

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 13.0   n/a MPO435865  
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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