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2981 Chagall (1981 EE20)
Classification: Main-belt Asteroid          SPK-ID: 2002981
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1720574634504058 1.307e-08  
a 3.14893445740563 1.2837e-08 au
q 2.607136782092837 4.4356e-08 au
i .8661768671263809 1.062e-06 deg
node 185.8670424713925 6.7581e-05 deg
peri 99.28156406737394 6.6364e-05 deg
M 303.4163732435533 5.8846e-06 deg
tp 2459521.298359182507
(2021-Nov-02.79835918)
3.3321e-05 TDB
period 2041.004013454208
5.59
1.2481e-05
3.417e-08
d
yr
n .1763837785849003 1.0786e-09 deg/d
Q 3.690732132718422 1.5046e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2762  
   data-arc span      24395 days (66.79 yr)  
   first obs. used      1954-06-07  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48506  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 20:39:11  

Additional Information
 Earth MOID = 1.58896 au 
 Jupiter MOID = 1.47294 au 
 T_jup = 3.185 
[ 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 12.64   n/a MPCxxxxx  
diameter diameter 15.489 km 0.617 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.5 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.117   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2981 Chagall (1981 EE20)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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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
1907-Apr-26 06:51 00:02 Jupiter 1.56561849103063 1.56561759210168 1.56561938996064 1.29165101361247 0.765723891355877 2417691.785599167 1.9171281883669 431.991057736262 26.959604979567 -24.6462629054449 7616674.14752879 T 40 CATAB v2.0g-lin.ifort 2021-May-03 20:39:48 2021-May-03 20:39
1917-Oct-01 18:15 00:02 Jupiter 1.48583496747082 1.48583453146078 1.48583540347984 1.31233507906872 0.76295043038045 2421503.260170534 1.71147012485841 383.485136972304 34.7458634544862 -6.71052927134058 2603723.75640288 T 40 CATAB v2.0g-lin.ifort 2021-May-03 20:39:48 2021-May-03 20:39
1928-Feb-17 14:34 00:02 Jupiter 1.87715372768915 1.87715280442669 1.87715465095236 3.15482791361215 3.00840241559175 2425294.106640385 1.50407303942643 78.5395828325174 7.79357350878637 -67.6913365577423 5322430.54604146 T 40 CATAB v2.0g-lin.ifort 2021-May-03 20:39:48 2021-May-03 20:39
1991-Oct-02 12:30 < 00:01 Jupiter 1.96155586380712 1.96155541687097 1.96155631074315 2.52669021932856 2.34958301207529 2448532.020842701 0.501757618692427 22.6189692623034 7.38457651038456 -70.4793571536018 3763159.28863878 T 40 CATAB v2.0g-lin.ifort 2021-May-03 20:39:48 2021-May-03 20:39
2002-Mar-05 18:12 < 00:01 Jupiter 1.53383141710241 1.53383117773094 1.53383165647589 1.20052637207151 0.58035365642968 2452339.258606592 0.321084898933304 359.392453059973 42.6105650283997 -26.2942535298271 14712591.5220923 T 40 CATAB v2.0g-lin.ifort 2021-May-03 20:39:48 2021-May-03 20:39
2012-Aug-12 06:16 < 00:01 Jupiter 1.51454195123068 1.51454171054257 1.51454219191852 1.42297132085308 0.952012432254855 2456151.761137020 0.188495215787674 92.0640420340044 22.1388891983127 -0.580677845595366 3457038.20817111 T 40 CATAB v2.0g-lin.ifort 2021-May-03 20:39:48 2021-May-03 20:39
2023-Jan-02 00:30 < 00:01 Jupiter 1.92218202540818 1.92218164620557 1.92218240461079 3.40538333058251 3.2734266602774 2459946.521089224 0.231681220173449 18.2208861620139 5.73854684816084 -42.3802573513617 6147382.37674832 T 40 CATAB v2.0g-lin.ifort 2021-May-03 20:39:48 2021-May-03 20:39
2086-Aug-16 23:27 00:01 Jupiter 1.91882503422197 1.918824218338 1.91882585010572 2.33644963147087 2.13919178459312 2483184.477343207 1.1731718656032 40.2173320934033 5.39885727434922 -73.2753563142529 3215872.52001895 T 40 CATAB v2.0g-lin.ifort 2021-May-03 20:39:48 2021-May-03 20:39
2097-Jan-19 20:31 00:01 Jupiter 1.51850766721333 1.51850722851379 1.51850810591899 1.15565927679625 0.468988024989285 2486993.354983194 1.37893797072759 910.667898026279 68.8514018592112 -21.0450483759835 11727201.1983644 T 40 CATAB v2.0g-lin.ifort 2021-May-03 20:39:48 2021-May-03 20:39
2107-Jun-26 13:48 00:02 Jupiter 1.55266862962425 1.55266787653934 1.55266938270748 1.56347305648839 1.16335471353246 2490802.074701147 1.66584920851015 145.392980963592 15.3117888800054 12.2937567896143 2332935.42865109 T 40 CATAB v2.0g-lin.ifort 2021-May-03 20:39:48 2021-May-03 20:39
2117-Nov-17 10:36 00:02 Jupiter 1.9724804898328 1.9724793028334 1.9724816768332 3.67973641595998 3.56112624777675 2494598.941380417 1.77837784831988 94.9113255633061 8.55251750003208 -60.8396000084395 5822971.23949041 T 40 CATAB v2.0g-lin.ifort 2021-May-03 20:39:48 2021-May-03 20:39
2181-Jun-27 14:32 00:03 Jupiter 1.86874419014782 1.86874244215269 1.86874593814178 2.13137434162368 1.90689312215627 2517832.105236299 2.78542353032747 82.5448929544122 2.03607769182391 -84.3372748245284 2794462.69082623 T 40 CATAB v2.0g-lin.ifort 2021-May-03 20:39:48 2021-May-03 20:39
2191-Dec-03 11:35 00:03 Jupiter 1.50416154114336 1.50416082407831 1.50416225822722 1.11836663494757 0.352852907885275 2521642.982524213 2.96123949727731 2564.00610063148 116.781110720796 -15.9362826416306 10551675.0945728 T 40 CATAB v2.0g-lin.ifort 2021-May-03 20:39:48 2021-May-03 20:39

Alternate Designations
 1981 EE20 = 1954 LF = 1977 RN3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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