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37943 (1998 HF18)
Classification: Main-belt Asteroid          SPK-ID: 2037943
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0836623286217909 8.2781e-08  
a 2.549298688287544 1.6094e-08 au
q 2.336018423672931 2.1698e-07 au
i 5.246590834693051 5.168e-06 deg
node 228.0701069393743 7.1412e-05 deg
peri 275.1625863988602 8.4233e-05 deg
M 203.3988111453423 3.9579e-05 deg
tp 2459647.228596442073
(2022-Mar-08.72859644)
0.00016176 TDB
period 1486.72111892605
4.07
1.4079e-05
3.855e-08
d
yr
n .2421435973547279 2.293e-09 deg/d
Q 2.762578952902157 1.7441e-08 au
  Orbit Determination Parameters
   # obs. used (total)      572  
   data-arc span      8361 days (22.89 yr)  
   first obs. used      1995-07-04  
   last obs. used      2018-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61436  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 04:41:17  

Additional Information
 Earth MOID = 1.35535 au 
 Jupiter MOID = 2.26582 au 
 T_jup = 3.430 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO436033  
diameter diameter 2.214 km 0.130 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.227   0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

37943 (1998 HF18)          Discovered 1998-Apr-18 by LINEAR at Socorro
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 HF18 = 2000 UK41 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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