Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1108735019169151 3.2979e-08  
a 3.139332777714603 1.2495e-08 au
q 2.791263958966828 1.0154e-07 au
i 2.515729643198795 3.592e-06 deg
node 78.92388741778633 8.7218e-05 deg
peri 86.67150913055835 8.9139e-05 deg
M 52.25139421767985 1.7094e-05 deg
tp 2458705.616928808699
(2019-Aug-10.11692881)
9.6409e-05 TDB
period 2031.676038855798
5.56
1.213e-05
3.321e-08
d
yr
n .1771936042533362 1.0579e-09 deg/d
Q 3.487401596462377 1.3881e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2847  
   data-arc span      25398 days (69.54 yr)  
   first obs. used      1950-10-15  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .443  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:30:44  

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 1.70280706127227 1.70280618803337 1.70280793451059 2.33632136490838 2.11270990878427 2425615.185007508 1.62021133212256 48.8282690312005 11.9093279113493 89.2016587963168 1464754.21516465 T 32 CATAB v2.0f-lin.ifort 2020-May-20 01:31:01 2020-May-20 01:31
1939-Apr-05 07:02 00:01 Jupiter 1.48281619425729 1.48281584060022 1.48281654791579 1.40140605400568 0.906359642547411 2429358.792784764 1.38379675409059 224.047282352924 138.276957646819 53.7621884649734 2439449.85045421 T 32 CATAB v2.0f-lin.ifort 2020-May-20 01:31:01 2020-May-20 01:31
1949-Jul-08 00:07 00:01 Jupiter 1.82630092329925 1.8263002729076 1.82630157369069 2.52266300608379 2.33157586245884 2433105.504997707 1.13789950334897 43.6660252292459 14.6365083131248 -82.7282555651719 2339444.20180938 T 32 CATAB v2.0f-lin.ifort 2020-May-20 01:31:01 2020-May-20 01:31
2012-Jun-03 16:29 < 00:01 Jupiter 1.78996268340249 1.78996227441189 1.78996309239299 2.681473357444 2.49877685361019 2456082.187119242 0.190002026169123 37.5979437352321 9.24479636220928 -86.5353137243438 2933275.37741548 T 32 CATAB v2.0f-lin.ifort 2020-May-20 01:31:01 2020-May-20 01:31
2022-Sep-03 09:23 < 00:01 Jupiter 1.47484122250439 1.47484086636364 1.47484157864565 1.41233361812581 0.919813838606439 2459825.890628857 0.322418267638395 199.034064960824 134.532211432821 38.379014719988 2237083.84367685 T 32 CATAB v2.0f-lin.ifort 2020-May-20 01:31:01 2020-May-20 01:31
2032-Dec-04 08:21 < 00:01 Jupiter 1.73747521305235 1.73747468663627 1.73747573946825 2.21462840857165 1.98231559861695 2463570.848143309 0.532725782326184 44.6226585986995 6.46345298871467 89.4367370026057 2544337.70717447 T 32 CATAB v2.0f-lin.ifort 2020-May-20 01:31:01 2020-May-20 01:31
2095-Nov-03 01:52 00:02 Jupiter 1.88562225207706 1.88562111810963 1.88562338604417 3.05813731040836 2.90754238979711 2486549.577944268 1.62868291392384 39.7548095642252 32.579203224219 -20.1119879843772 1326789.80119294 T 32 CATAB v2.0f-lin.ifort 2020-May-20 01:31:01 2020-May-20 01:31
2106-Feb-03 23:33 00:02 Jupiter 1.49488367430191 1.4948831470264 1.49488420157631 1.50659917275295 1.06612025664631 2490294.481578984 1.91714813788075 151.024584205751 135.486146060907 -5.47410036070204 1518189.69114179 T 32 CATAB v2.0f-lin.ifort 2020-May-20 01:31:01 2020-May-20 01:31
2116-May-06 13:29 00:02 Jupiter 1.65851971083502 1.65851847908459 1.65852094258593 1.94866085568536 1.66609100406891 2494039.061754794 2.16200605237267 116.655210343818 12.2154534117503 81.1337037989933 2269260.8889071 T 32 CATAB v2.0f-lin.ifort 2020-May-20 01:31:01 2020-May-20 01:31
2179-Mar-31 10:02 00:03 Jupiter 1.97488405248574 1.97488198600433 1.97488611896636 3.41559080486026 3.28762313341577 2517012.918313911 3.14326632768544 83.8356209631515 31.4984211390103 -15.3861686840068 911694.167977113 T 32 CATAB v2.0f-lin.ifort 2020-May-20 01:31:01 2020-May-20 01:31
2189-Jul-08 15:36 00:04 Jupiter 1.52904086588773 1.52903960158669 1.52904213018477 1.64855643372955 1.26878871600903 2520765.150273039 3.56405260286844 150.776863144305 96.3045920862927 -3.98755507248079 780501.847877059 T 32 CATAB v2.0f-lin.ifort 2020-May-20 01:31:01 2020-May-20 01:31
2199-Oct-10 14:30 00:04 Jupiter 1.57457586190532 1.57457416937468 1.57457755444821 1.69025212251087 1.33457047928685 2524511.104371531 3.8043110994615 328.467054076502 34.0162342157078 69.3117026735723 2713870.02389111 T 32 CATAB v2.0f-lin.ifort 2020-May-20 01:31:01 2020-May-20 01:31

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-May-25 12:22 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin