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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1108735062540011 3.0721e-08  
a 3.139332776922962 1.2174e-08 au
q 2.791263944647403 9.327e-08 au
i 2.515730280340811 3.5533e-06 deg
node 78.92393999229022 7.9227e-05 deg
peri 86.67145751951431 8.1331e-05 deg
M 52.25139380646424 1.7045e-05 deg
tp 2458705.616931240952
(2019-Aug-10.11693124)
9.6157e-05 TDB
period 2031.676038087311
5.56
1.1818e-05
3.236e-08
d
yr
n .1771936043203602 1.0307e-09 deg/d
Q 3.48740160919852 1.3524e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3177  
   data-arc span      25538 days (69.92 yr)  
   first obs. used      1950-10-15  
   last obs. used      2020-09-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42364  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:15:19  

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

[ 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
1929-Jan-03 16:26 00:02 Jupiter 1.70280708164727 1.70280623509884 1.70280792819521 2.33632137491316 2.11270992266518 2425615.185040386 1.55353072697345 47.4478682192689 11.2002291513933 -89.9967661160167 1493615.9934608 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:29 2020-Nov-13 04:15
1939-Apr-05 07:02 00:01 Jupiter 1.48281617902765 1.48281585843303 1.48281649962312 1.40140593961275 0.906359459200906 2429358.792801776 1.33062301879628 201.933708215994 133.870176236505 54.6009257388134 2566435.18006194 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:29 2020-Nov-13 04:15
1949-Jul-08 00:07 00:01 Jupiter 1.82630089983036 1.82630028632635 1.82630151333427 2.52266299468541 2.3315758475701 2433105.505013632 1.09947942441204 41.9544912647278 14.0216155919613 -82.4220924042398 2513957.88583747 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:29 2020-Nov-13 04:15
2012-Jun-03 16:29 < 00:01 Jupiter 1.78996267732313 1.78996226888227 1.78996308576388 2.68147332172034 2.49877681463143 2456082.187120813 0.18985728434184 34.9880867793846 9.16955983798843 -85.8761853849878 2946138.46341638 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:29 2020-Nov-13 04:15
2022-Sep-03 09:22 < 00:01 Jupiter 1.47484121220132 1.47484087319443 1.47484155120862 1.4123334700281 0.919813606847059 2459825.890620206 0.310245151760313 188.853136727168 128.836971174146 40.2306990500549 2364230.81940852 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:29 2020-Nov-13 04:15
2032-Dec-04 08:21 < 00:01 Jupiter 1.73747521704261 1.73747469202926 1.73747574205575 2.21462838991116 1.98231557833437 2463570.848135570 0.506337459172534 43.4262042384248 5.86164444797106 89.3363235954973 2551346.90518015 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:29 2020-Nov-13 04:15
2095-Nov-03 01:52 00:02 Jupiter 1.88562221499838 1.8856211145346 1.88562331546173 3.0581371535407 2.90754222176658 2486549.577908730 1.56271930986005 38.4034378658813 29.0762358634499 -14.5448065032489 1371229.16280184 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:29 2020-Nov-13 04:15
2106-Feb-03 23:33 00:02 Jupiter 1.4948836533552 1.49488316496606 1.4948841417434 1.50659898854377 1.06611998888199 2490294.481538277 1.83440522653834 140.444334792994 132.951100685981 -24.8273829993096 1644248.999182 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:29 2020-Nov-13 04:15
2116-May-06 13:29 00:02 Jupiter 1.65851974049478 1.65851853368314 1.65852094730671 1.94866086961021 1.66609102583721 2494039.061713816 2.06674491193462 112.898115784371 11.262023241739 80.5307582203505 2314378.36213929 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:29 2020-Nov-13 04:15
2179-Mar-31 10:02 00:03 Jupiter 1.97488398470024 1.97488198805443 1.97488598134526 3.41559049014419 3.28762280197185 2517012.918240476 3.0146573549582 80.9242323852415 28.0373405257525 -14.8564933132031 961386.09189525 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:29 2020-Nov-13 04:15
2189-Jul-08 15:36 00:03 Jupiter 1.52904081888884 1.5290396250988 1.52904201267531 1.64855616455837 1.26878835285073 2520765.150192969 3.41364801275046 141.669640604815 95.1855622564391 -7.1805545599599 831724.177392007 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:29 2020-Nov-13 04:15
2199-Oct-10 14:30 00:04 Jupiter 1.57457590593454 1.57457425381889 1.57457755806155 1.69025219546954 1.33457058296113 2524511.104286995 3.64236464094012 318.643038573562 31.5919839544533 68.7826112943341 2840138.78500359 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:29 2020-Nov-13 04:15

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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