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20162 (1996 UD)
Classification: Main-belt Asteroid          SPK-ID: 2020162
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1693352293017989 2.6615e-08  
a 2.330323065657108 7.1542e-09 au
q 1.93571727498679 6.1093e-08 au
i 6.429554849306546 1.1266e-06 deg
node 46.8769988844852 1.203e-05 deg
peri 7.25620915136613 1.4875e-05 deg
M 274.5752645488271 7.3432e-06 deg
tp 2459508.821471059177
(2021-Oct-21.32147106)
2.7426e-05 TDB
period 1299.339459409235
3.56
5.9835e-06
1.638e-08
d
yr
n .2770638553251355 1.2759e-09 deg/d
Q 2.724928856327425 8.3656e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1846  
   data-arc span      13680 days (37.45 yr)  
   first obs. used      1983-01-09  
   last obs. used      2020-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55017  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:14:24  

Additional Information
 Earth MOID = .946355 au 
 Jupiter MOID = 2.63441 au 
 T_jup = 3.544 
[ 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 14.36   n/a E2021B10  
diameter diameter 3.990 km 0.170 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 4.68 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Behrend, R. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.232   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

20162 (1996 UD)          Discovered 1996-Oct-16 by Kobayashi, T. at Oizumi
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1996 UD = 1983 AF3 = 1989 WG1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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