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523826 (1990 UP)
Classification: Amor [NEO]          SPK-ID: 2523826
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1707159372883379 7.146e-08  
a 1.329851000630632 2.1219e-09 au
q 1.102824240604139 9.5465e-08 au
i 28.2170836899806 2.394e-05 deg
node 33.19848897076783 8.5433e-06 deg
peri 294.2313523448199 3.8772e-05 deg
M 156.9322277916494 3.8777e-05 deg
tp 2458756.318620642795
(2019-Sep-29.81862064)
6.0269e-05 TDB
period 560.1481467866554
1.53
1.3407e-06
3.671e-09
d
yr
n .6426871213716856 1.5382e-09 deg/d
Q 1.556877760657124 2.4842e-09 au
  Orbit Determination Parameters
   # obs. used (total)      160  
   data-arc span      10419 days (28.53 yr)  
   first obs. used      1990-10-24  
   last obs. used      2019-05-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46019  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 10:46:33  

Additional Information
 Earth MOID = .20101 au 
 Jupiter MOID = 3.74929 au 
 T_jup = 4.791 
[ 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 20.3   n/a MPO461105  
diameter diameter 0.3 km n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543 based on assumed medium albedo (0.15)
rotation period rot_per 20. h n/a LCDB (Rev. 2019-August); 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:
[Wisniewski, W.Z.; Michalowski, T.M.; Harris, A.W.; McMillan, R.S. (1997) Icarus 126, 395-449; 1995, Lunar & Planetary Sci. XXVI, 1511-1512.]

523826 (1990 UP)          Discovered 1990-Oct-24 by Spacewatch at Kitt Peak
Reference: Last Updated: 2019-05-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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