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22603 Davidoconnor (1998 HK133)
Classification: Main-belt Asteroid          SPK-ID: 2022603
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05160457017565157 3.8148e-08  
a 2.667696386092337 1.1747e-08 au
q 2.530031060728902 9.9653e-08 au
i 4.575166645920651 3.3715e-06 deg
node 113.7590605963347 5.3901e-05 deg
peri 116.9698422933748 6.7237e-05 deg
M 36.36156178139352 3.867e-05 deg
tp 2459039.752933815744
(2020-Jul-09.25293382)
0.00017128 TDB
period 1591.486751153362
4.36
1.0512e-05
2.878e-08
d
yr
n .2262035796019699 1.4941e-09 deg/d
Q 2.805361711455771 1.2353e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1427  
   data-arc span      9534 days (26.10 yr)  
   first obs. used      1994-06-11  
   last obs. used      2020-07-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52442  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:08:08  

Additional Information
 Earth MOID = 1.5215 au 
 Jupiter MOID = 2.1785 au 
 T_jup = 3.376 
[ 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 14.58   n/a E2021B10  
diameter diameter 3.464 km 0.663 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.11 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:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
geometric albedo albedo 0.307   0.075 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22603 Davidoconnor           Discovered 1998 Apr. 19 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
David O'Connor mentored a finalist in the 2006 Intel Science Talent Search (STS), a science competition for high school seniors. He teaches at the Paul D. Schreiber High School, Port Washington, New York.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060314/MPCPages.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1998 HK133 = 1999 NG33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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