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20378 (1998 KZ46)
Classification: Main-belt Asteroid          SPK-ID: 2020378
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1149222125417292 4.4787e-08  
a 2.602714632146478 1.1435e-08 au
q 2.303604908005472 1.1735e-07 au
i 14.00429664943043 4.8396e-06 deg
node 258.5744917700764 1.8662e-05 deg
peri 137.4056205913448 2.6974e-05 deg
M 309.7169344677293 1.9832e-05 deg
tp 2459214.718761123033
(2020-Dec-31.21876112)
8.4876e-05 TDB
period 1533.692371138318
4.20
1.0108e-05
2.767e-08
d
yr
n .2347276460225236 1.5469e-09 deg/d
Q 2.901824356287485 1.2749e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1622  
   data-arc span      15306 days (41.91 yr)  
   first obs. used      1978-09-08  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4295  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:34:44  

Additional Information
 Earth MOID = 1.3318 au 
 Jupiter MOID = 2.49209 au 
 T_jup = 3.363 
[ 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 13.0   n/a MPO395198  
diameter diameter 8.037 km 0.205 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.14 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Kim, M.-J.; Choi, Y.-J.; Moon, H.-K.; Byun, Y.-I.; et al. (2014) Astron. J. 147, A56.]
geometric albedo albedo 0.227   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20378 (1998 KZ46)          Discovered 1998-May-22 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 KZ46 = 1978 RG2 = 1991 XX1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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