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JPL Small-Body Database Browser
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11020 Orwell (1984 OG)
Classification: Main-belt Asteroid          SPK-ID: 2011020
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1494267811163584 3.1567e-08  
a 3.100331280976578 1.6501e-08 au
q 2.637058757265892 9.7138e-08 au
i 3.012942773538986 4.2029e-06 deg
node 153.8491721137151 7.3343e-05 deg
peri 136.9806696996234 7.4859e-05 deg
M 156.3623248298538 1.545e-05 deg
tp 2457734.455519188286
(2016-Dec-11.95551919)
8.5356e-05 TDB
period 1993.933087343625
5.46
1.5919e-05
4.358e-08
d
yr
n .1805476835130924 1.4414e-09 deg/d
Q 3.563603804687264 1.8967e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2129  
   data-arc span      14644 days (40.09 yr)  
   first obs. used      1979-09-24  
   last obs. used      2019-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49454  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 03:28:50  

Additional Information
 Earth MOID = 1.6212 au 
 Jupiter MOID = 1.62353 au 
 T_jup = 3.203 
[ 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 12.6   n/a MPO337351  
diameter diameter 14.466 km 0.115 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.089   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11020 Orwell           Discovered 1984 July 31 by A. Mrkos at Klet.
British writer George Orwell (Eric Blair, 1903-1950) was renowned for his novels Animal Farm and 1984, the latter a brilliant examination of the dangers of totalitarian rule. The name was suggested by J. Ticha and endorsed by B. G. Marsden, who made the identification involving this aptly designated object.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29

[ 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
1943-Nov-28 20:52 00:02 Jupiter 1.87417014757232 1.87416917162937 1.87417112351528 2.21693695577281 2.00272782254201 2431057.369134992 1.64903483812712 81.4012353268342 8.93837049426354 -82.9883339357821 1948748.50501318 T 29 CATAB v2.0f-lin.ifort 2019-Nov-07 03:28:59 2019-Nov-07 03:29
1953-Sep-25 12:44 00:01 Jupiter 1.60605008720561 1.60604971801249 1.60605045639827 1.58487639943537 1.20708058456427 2434646.030455800 1.44770703862438 89.5802716612347 56.5288365491632 25.5890705733503 2031000.82955393 T 29 CATAB v2.0f-lin.ifort 2019-Nov-07 03:28:59 2019-Nov-07 03:29
2014-Feb-28 00:48 < 00:01 Jupiter 1.66062019582613 1.66061986334365 1.66062052830843 1.54250035555559 1.16583850668666 2456716.533545238 0.20968077078145 76.6517417128567 60.4805123892271 -54.0294955248907 2676421.1577834 T 29 CATAB v2.0f-lin.ifort 2019-Nov-07 03:28:59 2019-Nov-07 03:29
2023-Dec-19 23:31 < 00:01 Jupiter 1.76240510486131 1.76240464234651 1.762405567376 2.48531251612527 2.28376142544667 2460298.479540729 0.345342297204109 37.8247941923584 8.21113922951961 89.8370837439967 2547434.40429644 T 29 CATAB v2.0f-lin.ifort 2019-Nov-07 03:28:59 2019-Nov-07 03:29
2074-Jul-28 19:43 00:01 Jupiter 1.8927655954864 1.89276480343655 1.89276638753635 2.27254500301179 2.06626482265257 2478782.321587657 1.45237345368082 77.1108034470112 8.25191594094206 -83.0282289625977 2163543.15796596 T 29 CATAB v2.0f-lin.ifort 2019-Nov-07 03:28:59 2019-Nov-07 03:29
2084-May-27 16:26 00:02 Jupiter 1.61498442291511 1.6149839998711 1.61498484595848 1.56777373796349 1.18699624430444 2482373.184911210 1.76341304602026 103.024394363098 61.0954641545563 18.1461244414696 1769406.98443863 T 29 CATAB v2.0f-lin.ifort 2019-Nov-07 03:28:59 2019-Nov-07 03:29
2144-Nov-01 00:30 00:03 Jupiter 1.6785457703949 1.67854483235217 1.67854670843726 1.58758903790528 1.22931086780425 2504444.520627696 3.19497675368574 133.32660366069 68.1659792840764 59.5087929628428 1648956.67855394 T 29 CATAB v2.0f-lin.ifort 2019-Nov-07 03:28:59 2019-Nov-07 03:29
2154-Aug-24 11:05 00:03 Jupiter 1.75672851598888 1.7567270489483 1.75672998303186 2.40570771757614 2.19615836497219 2508027.961818629 3.46661135228425 154.076513677715 6.97903849556277 -88.3506409788991 2147990.82354265 T 29 CATAB v2.0f-lin.ifort 2019-Nov-07 03:28:59 2019-Nov-07 03:29

Alternate Designations
 1984 OG = 1979 SA9 = 1999 GL5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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