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20486 (1999 NU56)
Classification: Main-belt Asteroid          SPK-ID: 2020486
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1415467904147766 2.3529e-08  
a 2.664774975059629 1.2432e-08 au
q 2.287584630162322 6.5381e-08 au
i 12.08228213263262 1.0708e-06 deg
node 243.9019144362545 3.9249e-06 deg
peri 57.74513852895998 7.588e-06 deg
M 352.0018188925313 4.5854e-06 deg
tp 2459235.800265503048
(2021-Jan-21.30026550)
2.0318e-05 TDB
period 1588.873196335894
4.35
1.1119e-05
3.044e-08
d
yr
n .2265756643325579 1.5856e-09 deg/d
Q 3.041965319956936 1.4192e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1898  
   data-arc span      15290 days (41.86 yr)  
   first obs. used      1978-11-29  
   last obs. used      2020-10-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45906  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:22:11  

Additional Information
 Earth MOID = 1.29556 au 
 Jupiter MOID = 2.18212 au 
 T_jup = 3.338 
[ 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 13.59   n/a E2021B10  
diameter diameter 6.653 km 0.165 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.191   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20486 (1999 NU56)          Discovered 1999-Jul-12 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 NU56 = 1978 WA10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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