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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1111109164046608 4.0939e-08  
a 3.139808407828612 1.4381e-08 au
q 2.790941418299716 1.3034e-07 au
i 2.515755174216205 3.8729e-06 deg
node 78.92496026527235 9.6468e-05 deg
peri 86.56659954641786 9.8197e-05 deg
M 341.4578773152858 1.7623e-05 deg
tp 2458705.167077616354
(2019-Aug-09.66707762)
9.9563e-05 TDB
period 2032.137775301755
5.56
1.3962e-05
3.823e-08
d
yr
n .1771533428369753 1.2171e-09 deg/d
Q 3.488675397357508 1.5979e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2569  
   data-arc span      25046 days (68.57 yr)  
   first obs. used      1950-10-15  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44501  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:27:25  

Additional Information
 Earth MOID = 1.80016 au 
 Jupiter MOID = 1.48708 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-January); 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 1.70280697583005 1.70280596674837 1.70280798491104 2.33632082133881 2.1127092958687 2425615.185054570 1.9084476951614 54.8990331406927 14.5606019094319 87.1798210505952 1319103.71018406 T 29 CATAB v2.0e-lin.ifort 2019-May-29 19:27:36 2019-May-29 19:27
1939-Apr-05 07:02 00:02 Jupiter 1.48281610801979 1.4828156429827 1.48281657306092 1.40140581328696 0.906359233696447 2429358.792815055 1.61768952256088 295.271761973973 144.710771831212 50.7621791247352 2193880.5479556 T 29 CATAB v2.0e-lin.ifort 2019-May-29 19:27:36 2019-May-29 19:27
1949-Jul-08 00:07 00:01 Jupiter 1.82630096181466 1.82630015098833 1.82630177264068 2.52266306971628 2.33157593550144 2433105.505026849 1.31283052296636 46.4914739742647 16.7759455114299 -80.5655300008413 1849384.23713676 T 29 CATAB v2.0e-lin.ifort 2019-May-29 19:27:36 2019-May-29 19:27
2012-Jun-03 16:29 < 00:01 Jupiter 1.7899625884727 1.78996217517831 1.789963001767 2.68147261529244 2.49877604715323 2456082.187132637 0.191054276588282 44.088550896254 9.49256694763334 -87.2925886150679 2880863.2717305 T 29 CATAB v2.0e-lin.ifort 2019-May-29 19:27:36 2019-May-29 19:27
2022-Sep-03 09:23 < 00:01 Jupiter 1.47484112203348 1.47484070554345 1.47484153852427 1.41233327539094 0.919813269817197 2459825.890639072 0.370357697567836 235.515501588809 140.471368993694 33.2190764193102 1956383.26451333 T 29 CATAB v2.0e-lin.ifort 2019-May-29 19:27:36 2019-May-29 19:27
2032-Dec-04 08:21 < 00:01 Jupiter 1.7374752528571 1.73747471797416 1.73747578773985 2.21462847139135 1.9823156744327 2463570.848153334 0.635958473788576 46.6164465538177 8.22245530465853 -89.3564494573459 2500129.49552365 T 29 CATAB v2.0e-lin.ifort 2019-May-29 19:27:36 2019-May-29 19:27
2095-Nov-03 01:52 00:02 Jupiter 1.88562214759822 1.88562087651235 1.88562341868367 3.05813646986246 2.90754149715519 2486549.577935989 1.90978151917818 44.9041002384581 38.3799835075125 -28.1937645530969 1177215.50615471 T 29 CATAB v2.0e-lin.ifort 2019-May-29 19:27:36 2019-May-29 19:27
2106-Feb-03 23:33 00:02 Jupiter 1.49488355592772 1.49488289621914 1.49488421563452 1.50659864770143 1.06611947257866 2490294.481557749 2.26389895149493 189.996303584443 138.690729340863 4.31966530652307 1210057.79827566 T 29 CATAB v2.0e-lin.ifort 2019-May-29 19:27:36 2019-May-29 19:27
2116-May-06 13:29 00:03 Jupiter 1.65851974509651 1.6585183978371 1.65852109235685 1.94866098174808 1.66609115784422 2494039.061735420 2.55939831843795 132.062938808196 14.9105805560168 82.9292521169007 2164599.30408367 T 29 CATAB v2.0e-lin.ifort 2019-May-29 19:27:36 2019-May-29 19:27
2179-Mar-31 10:02 00:04 Jupiter 1.97488393831443 1.97488157590275 1.97488630072511 3.41558994408146 3.28762223158994 2517012.918290425 3.69350454685571 95.9454468715373 36.1007346820035 -15.8326383737423 799557.048992667 T 29 CATAB v2.0e-lin.ifort 2019-May-29 19:27:36 2019-May-29 19:27
2189-Jul-08 15:36 00:04 Jupiter 1.52904072683121 1.52903919561138 1.52904225804514 1.64855572775858 1.26878775902382 2520765.150235532 4.20127549129815 185.247454500257 100.802969601467 1.26541937399297 638275.767085426 T 29 CATAB v2.0e-lin.ifort 2019-May-29 19:27:36 2019-May-29 19:27
2199-Oct-10 14:30 00:04 Jupiter 1.57457587761486 1.5745739965516 1.57457775869495 1.69025220830231 1.33457059196441 2524511.104333243 4.48928710636765 372.174304407908 40.0771614422969 70.8518900587749 2455938.95976321 T 29 CATAB v2.0e-lin.ifort 2019-May-29 19:27:36 2019-May-29 19:27

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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