Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
266836 (2009 UK18)
Classification: Outer Main-belt Asteroid          SPK-ID: 2266836
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1516446138489458 9.8772e-08  
a 3.220459478590078 6.8043e-08 au
q 2.732094144543109 2.9885e-07 au
i 22.86603030222214 9.7478e-06 deg
node 67.65614545708183 1.6423e-05 deg
peri 350.7907099607947 3.5773e-05 deg
M 311.5448270799453 2.4323e-05 deg
tp 2459484.627213671092
(2021-Sep-27.12721367)
0.0001426 TDB
period 2110.936578233923
5.78
6.6901e-05
1.832e-07
d
yr
n .1705404149570365 5.4049e-09 deg/d
Q 3.708824812637048 7.8361e-08 au
  Orbit Determination Parameters
   # obs. used (total)      343  
   data-arc span      7949 days (21.76 yr)  
   first obs. used      1998-12-14  
   last obs. used      2020-09-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55363  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 03:17:25  

Additional Information
 Earth MOID = 1.74646 au 
 Jupiter MOID = 1.64558 au 
 T_jup = 3.049 
[ 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 14.9   n/a MPO440312  
diameter diameter 4.663 km 0.203 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.098   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

266836 (2009 UK18)          Discovered 2009-Oct-20 by Sachs, J. at Tzec Maun
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

[ 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
1996-Jun-06 19:30 00:02 Jupiter 1.96298836475542 1.96298650109716 1.96299022844269 4.98229199366362 4.89491987776832 2450241.312709251 1.71149410879816 450.895130180832 43.0065828677031 79.3952969051079 1700628.35483986 T 15 CATAB v2.0f-lin.ifort 2021-Apr-14 03:17:27 2021-Apr-14 03:17
2007-Sep-05 17:59 < 00:01 Jupiter 1.70833129453457 1.70833028279339 1.70833230628322 5.27346438314137 5.17858950933618 2454349.249313901 0.767864660303613 299.738857391392 36.4862306929668 83.654131245802 1897999.5316683 T 15 CATAB v2.0f-lin.ifort 2021-Apr-14 03:17:27 2021-Apr-14 03:17
2019-Jan-13 14:25 < 00:01 Jupiter 1.63818940353344 1.6381883599972 1.63819044707042 5.33059503559646 5.23269982769324 2458497.100358281 0.782482642304165 193.21369459213 47.4971247823708 84.4400022131053 1966613.46793241 T 15 CATAB v2.0f-lin.ifort 2021-Apr-14 03:17:27 2021-Apr-14 03:17
2030-May-27 02:29 00:02 Jupiter 1.73976983337226 1.73976780126915 1.73977186547556 5.29961567538573 5.2069384872935 2462648.603651118 1.67858527841737 194.144493884203 99.4507634522992 -84.3623943026889 1789097.19952995 T 15 CATAB v2.0f-lin.ifort 2021-Apr-14 03:17:27 2021-Apr-14 03:17
2041-Sep-12 22:48 00:03 Jupiter 1.99413622346805 1.99413268378781 1.99413976314909 5.12087165657386 5.03724263205787 2466775.449842589 2.9817597180594 255.059529587768 167.100567513914 71.724862354385 1505414.27126778 T 15 CATAB v2.0f-lin.ifort 2021-Apr-14 03:17:27 2021-Apr-14 03:17
2173-Dec-28 17:37 00:08 Jupiter 1.78822734600306 1.78822139475813 1.78823329846474 5.12823537238851 5.03502393395886 2515094.234336774 7.98629638701757 2406.93641153983 50.7572604810675 82.9104692588497 1611622.55305422 T 15 CATAB v2.0f-lin.ifort 2021-Apr-14 03:17:27 2021-Apr-14 03:17
2185-Apr-27 13:31 00:08 Jupiter 1.644752501117 1.64475112486008 1.64475387758503 5.29008063529372 5.19181890674024 2519232.063067334 7.549981923791 1162.1234039385 37.8776611146266 87.1622958540702 1868221.17528947 T 15 CATAB v2.0f-lin.ifort 2021-Apr-14 03:17:27 2021-Apr-14 03:17
2196-Sep-10 13:25 00:09 Jupiter 1.68200331358222 1.68199877602781 1.68200785128005 5.33082396480781 5.23550618345036 2523386.059190799 8.52803153677005 882.6362690826 90.9950825437058 -76.3977410778673 1857002.17893061 T 15 CATAB v2.0f-lin.ifort 2021-Apr-14 03:17:27 2021-Apr-14 03:17
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-11 19:53 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin