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24638 (1981 UC23)
Classification: Main-belt Asteroid          SPK-ID: 2024638
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04570070314643122 3.8069e-08  
a 3.166184670808675 1.9415e-08 au
q 3.021487805061266 1.2539e-07 au
i 8.757133619315315 4.62e-06 deg
node 202.5826617405155 2.3112e-05 deg
peri 309.8373465802836 5.0248e-05 deg
M 230.8464582729938 4.5498e-05 deg
tp 2459938.755360596942
(2022-Dec-25.25536060)
0.00026201 TDB
period 2057.798231942143
5.63
1.8928e-05
5.182e-08
d
yr
n .1749442653861323 1.6091e-09 deg/d
Q 3.310881536556083 2.0302e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1554  
   data-arc span      14355 days (39.30 yr)  
   first obs. used      1981-10-24  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49048  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:45:41  

Additional Information
 Earth MOID = 2.03843 au 
 Jupiter MOID = 1.69066 au 
 T_jup = 3.184 
[ 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 13.63   n/a E2021B10  
diameter diameter 19.438 km 5.824 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.019   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

24638 (1981 UC23)          Discovered 1981-Oct-24 by Bus, S. J. at Palomar
Reference: 20010606/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 UC23 = 1981 WV3 = 2000 AH196 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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