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24308 Cowenco (1999 YC9)
Classification: Main-belt Asteroid          SPK-ID: 2024308
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0694494969257605 3.8692e-08  
a 2.965234732134727 1.5314e-08 au
q 2.759300671721178 1.1497e-07 au
i 1.585038971350881 6.4048e-06 deg
node 356.1462204025128 0.00013316 deg
peri 297.6387446555941 0.00014364 deg
M 219.7241203154707 5.6778e-05 deg
tp 2459927.220723020590
(2022-Dec-13.72072302)
0.00029526 TDB
period 1865.035249650733
5.11
1.4448e-05
3.956e-08
d
yr
n .1930258423091025 1.4953e-09 deg/d
Q 3.171168792548276 1.6378e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1499  
   data-arc span      10465 days (28.65 yr)  
   first obs. used      1992-07-26  
   last obs. used      2021-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51674  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 03:32:58  

Additional Information
 Earth MOID = 1.74172 au 
 Jupiter MOID = 1.95573 au 
 T_jup = 3.260 
[ 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 13.96   n/a MPCxxxxx  
diameter diameter 4.523 km 1.242 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.217   0.107 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

24308 Cowenco           Discovered 1999 Dec. 29 by G. Hug and G. Bell at Farpoint Observatory.
Courtney, Wendy and Cody have the misfortune of being the offspring of an amateur astronomer. They have managed to adjust and mature despite the often neglected paternal oversight of a sleepy dad, the first discoverer of this object.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010804/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 1999 YC9 = 1992 OU1 = 1997 PH5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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