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JPL Small-Body Database Browser
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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07480872084517091 6.5722e-08  
a 2.281552024791293 1.1062e-08 au
q 2.110872036274947 1.5226e-07 au
i 23.73338716387084 5.7191e-06 deg
node 49.04705036575726 9.1844e-06 deg
peri 166.2008691716764 2.9036e-05 deg
M 262.426190453697 3.0746e-05 deg
tp 2459341.673076489258
(2021-May-07.17307649)
0.00010849 TDB
period 1258.763064671042
3.45
9.1547e-06
2.506e-08
d
yr
n .2859950455362944 2.08e-09 deg/d
Q 2.452232013307639 1.189e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1339  
   data-arc span      13951 days (38.20 yr)  
   first obs. used      1981-10-24  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47073  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 23:18:15  

Additional Information
 Earth MOID = 1.10472 au 
 Jupiter MOID = 2.53311 au 
 T_jup = 3.490 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457001.5 (2014-Dec-10.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07479218133039231 6.5724e-08  
q 2.110784860515805 1.5221e-07 au
tp 2456825.375636368771
(2014-Jun-16.87563637)
0.00010287 TDB
node 49.06385386932143 9.186e-06 deg
peri 166.4865784723595 2.9125e-05 deg
i 23.73213121996111 5.7189e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1339  
   data-arc span      13951 days (38.20 yr)  
   first obs. used      1981-10-24  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47073  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 23:18:15  

Additional Information
 Jupiter MOID = 2.53311 au 
 T_jup = 3.490 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.319605878421309E-15 -9.981907092310603E-15 -2.158338747162783E-12 -2.74513631165844E-15 -4.163404031799877E-13 -5.959006379303716E-15
q -9.981907092310603E-15 2.316705203335195E-14 5.185980835679427E-12 5.80975271147058E-15 1.020200242992424E-12 1.527589134341899E-14
tp -2.158338747162783E-12 5.185980835679427E-12 1.058183139517422E-8 -7.442075438621922E-12 2.838648728043767E-9 2.90350390376778E-11
node -2.74513631165844E-15 5.80975271147058E-15 -7.442075438621922E-12 8.438324247404337E-11 -7.903579427098047E-11 -7.651522360114148E-12
peri -4.163404031799877E-13 1.020200242992424E-12 2.838648728043767E-9 -7.903579427098047E-11 8.48264128483433E-10 1.463182028388946E-11
i -5.959006379303716E-15 1.527589134341899E-14 2.90350390376778E-11 -7.651522360114148E-12 1.463182028388946E-11 3.270546788087641E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.9   n/a MPO299064  
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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