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20672 (1999 UU50)
Classification: Main-belt Asteroid          SPK-ID: 2020672
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2184801333646184 3.5638e-08  
a 2.792169228642286 1.0498e-08 au
q 2.182135723191936 9.6822e-08 au
i 8.884629308224021 4.2711e-06 deg
node 188.0860210635414 1.9916e-05 deg
peri 336.9740216006763 2.1896e-05 deg
M 90.56970478520159 8.6613e-06 deg
tp 2458771.762488219662
(2019-Oct-15.26248822)
4.007e-05 TDB
period 1704.162607209257
4.67
9.6108e-06
2.631e-08
d
yr
n .2112474469731133 1.1914e-09 deg/d
Q 3.402202734092636 1.2791e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1719  
   data-arc span      15466 days (42.34 yr)  
   first obs. used      1978-05-05  
   last obs. used      2020-09-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49047  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:26:19  

Additional Information
 Earth MOID = 1.19176 au 
 Jupiter MOID = 1.59362 au 
 T_jup = 3.276 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.01   n/a E2021B10  
diameter diameter 10.239 km 0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.71562 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.042   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20672 (1999 UU50)          Discovered 1999-Oct-30 by CSS at Catalina
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1999 UU50 = 1978 JU = 1987 FN1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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