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1805 Dirikis (1970 GD)
Classification: Main-belt Asteroid          SPK-ID: 2001805
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1108735007208012 3.1545e-08  
a 3.139332777993444 1.2273e-08 au
q 2.791263962969753 9.6274e-08 au
i 2.515730173598953 3.5585e-06 deg
node 78.92391519853811 8.2906e-05 deg
peri 86.67148139491287 8.4933e-05 deg
M 52.25139403528453 1.7057e-05 deg
tp 2458705.616929798767
(2019-Aug-10.11692980)
9.6218e-05 TDB
period 2031.676039126484
5.56
1.1914e-05
3.262e-08
d
yr
n .1771936042297282 1.0391e-09 deg/d
Q 3.487401593017135 1.3633e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3026  
   data-arc span      25447 days (69.67 yr)  
   first obs. used      1950-10-15  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43216  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:36:45  

Additional Information
 Earth MOID = 1.79997 au 
 Jupiter MOID = 1.48673 au 
 T_jup = 3.200 
[ 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 11.4   n/a MPO347531  
diameter diameter 28.098 km 0.238 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 23.0 h n/a LCDB (Rev. 2019-August); 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:
[Behrend, R. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Broz, M.; Durech, J.; Warner, B.D.; et al. (2013) Astron. Astrophys. 559, A134.]
geometric albedo albedo 0.089   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

1805 Dirikis (1970 GD)          Discovered 1970-Apr-01 by Chernykh, L. at Nauchnyj
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
1929-Jan-03 16:26 00:02 Jupiter 1.70280705948185 1.70280620511204 1.70280791385117 2.33632136773626 2.11270991166389 2425615.185005076 1.57568071549958 47.7910114746452 11.445948124374 89.7120753748424 1485654.90684253 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:36:59 2020-Jun-23 15:37
1939-Apr-05 07:02 00:01 Jupiter 1.48281620087491 1.48281586813442 1.48281653361642 1.40140605082086 0.906359640435753 2429358.792775495 1.34818004402493 210.270835774662 136.009721186522 54.4521720532568 2511905.61551413 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:36:59 2020-Jun-23 15:37
1949-Jul-08 00:07 00:01 Jupiter 1.82630092646265 1.82630030163479 1.8263015512904 2.52266308576048 2.33157594901008 2433105.504990328 1.11200572479641 42.8172376176864 14.2459724799483 -82.7275416008942 2454253.22443585 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:36:59 2020-Jun-23 15:37
2012-Jun-03 16:29 < 00:01 Jupiter 1.78996268381298 1.7899622748697 1.78996309275617 2.68147333878807 2.49877683363367 2456082.187117037 0.189941977549081 35.801120770173 9.20053829067676 -86.134852191064 2938075.31770239 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:36:59 2020-Jun-23 15:37
2022-Sep-03 09:23 < 00:01 Jupiter 1.47484122912488 1.47484088340155 1.47484157484863 1.41233360474818 0.919813820868491 2459825.890634898 0.314653123355638 192.831480967635 131.851415559496 39.6977848973415 2308275.18067076 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:36:59 2020-Jun-23 15:37
2032-Dec-04 08:21 < 00:01 Jupiter 1.73747521124476 1.7374746854738 1.73747573701553 2.21462836951173 1.98231555472364 2463570.848153787 0.515687921500636 44.0893954302338 6.09594891577409 89.3253161545544 2547776.07922515 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:36:59 2020-Jun-23 15:37
2095-Nov-03 01:52 00:02 Jupiter 1.88562225744222 1.88562114464279 1.88562337024133 3.05813735883408 2.90754244117061 2486549.577952851 1.58506794981334 38.8789573564984 30.4322390946512 -16.2935416871947 1354320.92231796 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:36:59 2020-Jun-23 15:37
2106-Feb-03 23:33 00:02 Jupiter 1.49488368293973 1.49488317978358 1.49488418609486 1.50659915039225 1.06612022811805 2490294.481584808 1.86259941146277 144.265003960951 134.538341605385 -14.8457304908389 1593780.88219915 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:36:59 2020-Jun-23 15:37
2116-May-06 13:29 00:02 Jupiter 1.65851970617821 1.65851849056046 1.65852092179643 1.9486608357553 1.66609097989802 2494039.061766825 2.0992379075979 114.283336898676 11.6121014181348 80.7516257387545 2291183.39885043 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:36:59 2020-Jun-23 15:37
2179-Mar-31 10:02 00:03 Jupiter 1.97488406406174 1.97488204292214 1.97488608520056 3.4155909516155 3.28762328664801 2517012.918336247 3.05802736136312 81.9439511736882 29.5274014917083 -15.0722071342405 940721.619452048 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:36:59 2020-Jun-23 15:37
2189-Jul-08 15:36 00:03 Jupiter 1.52904087971206 1.52903966053036 1.52904209889011 1.64855646426643 1.26878875963346 2520765.150294236 3.46459410479144 144.961376685969 95.7274966318591 -5.87863382875699 812281.608217836 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:36:59 2020-Jun-23 15:37
2199-Oct-10 14:30 00:04 Jupiter 1.57457585366424 1.57457418776257 1.57457751957754 1.69025212183183 1.33457047631717 2524511.104385684 3.69723558162563 322.023382688946 32.5658349690283 68.9765270962974 2783044.35637838 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:36:59 2020-Jun-23 15:37

Alternate Designations
 1970 GD = 1942 EJ = 1948 JH = 1948 JM = 1950 TU1 = 1953 EL = 1955 QL1 = 1959 JP = 1962 WP = 1962 XC1 = 1964 FE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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