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24422 Helentressa (2000 CF3)
Classification: Main-belt Asteroid          SPK-ID: 2024422
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04556209926137394 4.1291e-08  
a 2.366725477621613 8.4022e-09 au
q 2.258892496485795 9.583e-08 au
i 6.544400705118305 4.285e-06 deg
node 160.9626296504226 2.4763e-05 deg
peri 13.41480289086421 4.1495e-05 deg
M 186.1702799430274 3.4324e-05 deg
tp 2459842.657835033411
(2022-Sep-20.15783503)
0.00012782 TDB
period 1329.903888335435
3.64
7.082e-06
1.939e-08
d
yr
n .2706962534342174 1.4415e-09 deg/d
Q 2.474558458757432 8.785e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1657  
   data-arc span      10727 days (29.37 yr)  
   first obs. used      1991-09-07  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51408  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:41:44  

Additional Information
 Earth MOID = 1.2639 au 
 Jupiter MOID = 2.48464 au 
 T_jup = 3.537 
[ 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 14.96   n/a E2021B10  
rotation period rot_per 6.779 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:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]

24422 Helentressa           Discovered 2000 Feb. 2 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Helen Tressa D´Couto (b. 1990) was awarded second place in the 2008 In Intel International Science and Engineering Fair for her environmental management project. She attends the Clear Lake High School, Houston, Texas, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080917/MPCPages.arcLast Updated: 2008-09-19

Alternate Designations
 2000 CF3 = 1991 RE32 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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