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18024 Dobson (1999 KK4)
Classification: Main-belt Asteroid          SPK-ID: 2018024
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06652154044028656 3.4744e-08  
a 3.183847919164729 1.6973e-08 au
q 2.972053451054291 1.1322e-07 au
i 9.5536357777354 4.3843e-06 deg
node 182.5419433110456 1.9402e-05 deg
peri 43.15910793307786 3.5298e-05 deg
M 332.5449272325561 2.8553e-05 deg
tp 2459554.751194769759
(2021-Dec-06.25119477)
0.00016453 TDB
period 2075.042036846042
5.68
1.6593e-05
4.543e-08
d
yr
n .1734904612087674 1.3873e-09 deg/d
Q 3.395642387275168 1.8102e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1605  
   data-arc span      10301 days (28.20 yr)  
   first obs. used      1993-03-29  
   last obs. used      2021-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52793  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:29:38  

Additional Information
 Earth MOID = 1.97335 au 
 Jupiter MOID = 1.58567 au 
 T_jup = 3.174 
[ 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 13.97   n/a MPO636336  
diameter diameter 5.243 km 0.337 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.213   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18024 Dobson           Discovered 1999 May 20 by J. M. Roe at Oaxaca.
John Dobson (b. 1915) is one of the most important popularizers of astronomy of the twentieth century. His telescope design has spread around the world and enabled amateur astronomers to use larger apertures than before. He demonstrates a passion for sharing his knowledge of the universe with the public at large.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20011101/MPCPages.arcLast Updated: 2009-05-11

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1905-Aug-26 07:03 00:03 Jupiter 1.70421341070842 1.70421239380243 1.7042144276179 2.88804386543965 2.71049146568503 2417083.794068575 2.7333465142733 145.843094231859 22.6522824276838 68.224576325303 3114174.85206652 T 32 CATAB v2.0g-lin.ifort 2021-Aug-25 14:29:43 2021-Aug-25 14:29
1916-Jul-19 03:06 00:02 Jupiter 1.61323637121172 1.61323600164167 1.61323674078204 3.25979097529383 3.09453488997369 2421063.628947323 2.26401487392877 186.734199016558 15.7824088683324 89.9329128386576 2953109.70548906 T 32 CATAB v2.0g-lin.ifort 2021-Aug-25 14:29:43 2021-Aug-25 14:29
1927-Jun-12 11:55 00:02 Jupiter 1.75612777092518 1.75612681960218 1.75612872225126 3.53613977748379 3.39700406153257 2425043.996518367 2.03481420613527 141.335898421984 18.6352571414694 -73.1916402245779 3423684.94705252 T 32 CATAB v2.0g-lin.ifort 2021-Aug-25 14:29:43 2021-Aug-25 14:29
2025-Aug-09 11:58 < 00:01 Jupiter 1.97767695634796 1.97767648508827 1.97767742760776 2.86120368750078 2.70737940769599 2460896.998951379 0.378048204501961 40.7867665250461 12.953304184033 68.9454547254434 3810530.40166871 T 32 CATAB v2.0g-lin.ifort 2021-Aug-25 14:29:43 2021-Aug-25 14:29
2036-May-30 20:26 < 00:01 Jupiter 1.74970042121861 1.74969996206163 1.7497008803757 2.69081821292645 2.5044582618544 2464844.351555561 0.666564995919744 55.4285900473302 18.5954314939213 79.5494825874878 3513785.49628931 T 32 CATAB v2.0g-lin.ifort 2021-Aug-25 14:29:43 2021-Aug-25 14:29
2047-Apr-14 01:35 < 00:01 Jupiter 1.62492428673748 1.62492392719183 1.62492464628305 3.16239982078686 2.99303104015197 2468814.565863405 0.933037241805788 82.2252714741934 15.4542058903184 89.3196130988418 2870584.51874973 T 32 CATAB v2.0g-lin.ifort 2021-Aug-25 14:29:43 2021-Aug-25 14:29
2058-Mar-09 22:18 00:01 Jupiter 1.71974078478401 1.71974008189261 1.71974148767668 3.56845168354213 3.42765066282942 2472797.429485423 1.27159574593822 99.0033764458686 17.6907663696633 -74.2448662809209 3409546.78392737 T 32 CATAB v2.0g-lin.ifort 2021-Aug-25 14:29:43 2021-Aug-25 14:29
2069-Jan-19 06:10 00:02 Jupiter 1.98093300062031 1.98093193589309 1.98093406534832 3.95360583816264 3.84393337594837 2476765.756942220 1.62734701449048 87.9178735402122 20.094891277641 -57.788209635704 4108583.42833725 T 32 CATAB v2.0g-lin.ifort 2021-Aug-25 14:29:43 2021-Aug-25 14:29
2167-Feb-27 03:47 00:04 Jupiter 1.78704771067424 1.78704615475751 1.78704926659219 2.50582728014344 2.30894196597599 2512597.657664966 4.16515323839728 113.459371844822 32.4615677372509 42.7647074302703 3489136.10491943 T 32 CATAB v2.0g-lin.ifort 2021-Aug-25 14:29:43 2021-Aug-25 14:29
2178-Jan-02 08:43 00:04 Jupiter 1.64564060069436 1.64564002443705 1.64564117696337 3.01440093559108 2.8385206137332 2516559.863050082 4.18141437226709 292.606022043011 16.7169087349188 82.2249277496379 2675470.59902191 T 32 CATAB v2.0g-lin.ifort 2021-Aug-25 14:29:43 2021-Aug-25 14:29
2188-Nov-26 01:53 00:04 Jupiter 1.69412670709867 1.69412519202012 1.69412822220227 3.55201453790678 3.40835084666887 2520540.578709444 4.47433655077407 351.158471121043 16.6262690804212 -79.5148272544565 3339899.18716782 T 32 CATAB v2.0g-lin.ifort 2021-Aug-25 14:29:43 2021-Aug-25 14:29
2199-Oct-12 03:35 00:05 Jupiter 1.93341774889372 1.93341495071199 1.93342054708819 4.01960812718778 3.90909932971627 2524512.649542397 4.95997887036527 289.482907886451 18.9311968985162 -62.9686772928357 4384366.93720222 T 32 CATAB v2.0g-lin.ifort 2021-Aug-25 14:29:43 2021-Aug-25 14:29

Alternate Designations
 1999 KK4 = 1995 UD27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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