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13943 (1990 HG)
Classification: Main-belt Asteroid          SPK-ID: 2013943
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07471427395965043 1.9508e-08  
a 2.281387130018165 1.0031e-08 au
q 2.110934946977967 4.5885e-08 au
i 23.73320139568002 8.9766e-07 deg
node 49.04057436040824 2.4808e-06 deg
peri 166.2427553987899 8.3408e-06 deg
M 319.5833457499534 1.0759e-05 deg
tp 2459341.804100914780
(2021-May-07.30410091)
3.8258e-05 TDB
period 1258.62660512682
3.45
8.3009e-06
2.273e-08
d
yr
n .2860260529481864 1.8864e-09 deg/d
Q 2.451839313058363 1.078e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1657  
   data-arc span      14387 days (39.39 yr)  
   first obs. used      1981-10-24  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45665  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:13:20  

Additional Information
 Earth MOID = 1.10359 au 
 Jupiter MOID = 2.53234 au 
 T_jup = 3.490 
[ 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 13.97   n/a E2021B10  
diameter diameter 4.203 km 0.143 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.437   0.120 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13943 (1990 HG)          Discovered 1990-Apr-26 by Helin, E. F. at Palomar
Reference: 20000320/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 HG = 1981 UF23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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