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30944 (1994 GD1)
Classification: Main-belt Asteroid          SPK-ID: 2030944
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2256822328089505 5.1705e-08  
a 2.935534285772112 1.1935e-08 au
q 2.273036353671834 1.5102e-07 au
i 10.90963533291976 4.4203e-06 deg
node 67.42104155722038 2.7384e-05 deg
peri 142.2109343430827 2.8631e-05 deg
M 147.2443146302737 8.5171e-06 deg
tp 2458645.110370635859
(2019-Jun-10.61037064)
4.3042e-05 TDB
period 1837.084625306649
5.03
1.1204e-05
3.067e-08
d
yr
n .195962665541283 1.1951e-09 deg/d
Q 3.59803221787239 1.4629e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1426  
   data-arc span      15121 days (41.40 yr)  
   first obs. used      1979-04-25  
   last obs. used      2020-09-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4997  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 16:01:39  

Additional Information
 Earth MOID = 1.27831 au 
 Jupiter MOID = 1.41819 au 
 T_jup = 3.210 
[ 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 13.93   n/a E2021B10  
diameter diameter 9.357 km 0.197 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.080   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

30944 (1994 GD1)          Discovered 1994-Apr-08 by Endate, K., Watanabe, K. at Kitami
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

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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
1916-Apr-06 18:43 00:02 Jupiter 1.5041212200869 1.50412016698622 1.50412227319835 1.5626026260336 1.14693418302222 2420960.279738883 1.5330241052314 500.722339549015 122.146243812561 -46.8726939288294 1477190.39257776 T 23 CATAB v2.0g-lin.ifort 2021-Aug-25 16:01:44 2021-Aug-25 16:01
1950-Oct-25 15:51 00:01 Jupiter 1.88601958711324 1.886018415702 1.88602075854324 1.38463112390794 1.0094511196863 2433580.160529867 1.36200161248858 681.050224022273 123.216478315721 46.8522519444771 1537597.89460216 T 23 CATAB v2.0g-lin.ifort 2021-Aug-25 16:01:44 2021-Aug-25 16:01
1977-Jun-04 03:23 < 00:01 Jupiter 1.80465062175581 1.80464971319333 1.80465153032403 2.76925059758594 2.59423169279313 2443298.641193967 0.794881188096467 183.949500009366 10.4001777148794 -77.5258429497021 2507819.16961743 T 23 CATAB v2.0g-lin.ifort 2021-Aug-25 16:01:44 2021-Aug-25 16:01
2012-Feb-24 07:41 < 00:01 Jupiter 1.44682655893726 1.4468261494634 1.44682696841359 2.31212657166695 2.04329631477816 2455981.820186118 0.233898559017949 120.797166812345 23.4278770957216 -73.0220562661207 1860769.32867141 T 23 CATAB v2.0g-lin.ifort 2021-Aug-25 16:01:44 2021-Aug-25 16:01
2047-Jan-12 13:19 < 00:01 Jupiter 1.4479920193296 1.44799132772372 1.44799271093705 1.93747216406919 1.6074424851272 2468723.054513925 0.725370495434272 188.132626542597 59.6531117932359 -60.1351816719884 1621277.2404048 T 23 CATAB v2.0g-lin.ifort 2021-Aug-25 16:01:44 2021-Aug-25 16:01
2081-Sep-09 08:27 00:02 Jupiter 1.7719597774024 1.7719581921659 1.77196136305288 1.20473482539822 0.703815991389222 2481381.851875091 1.87494097258296 2033.33611443298 824.39898448676 88.4667355190708 999064.325353164 T 23 CATAB v2.0g-lin.ifort 2021-Aug-25 16:01:44 2021-Aug-25 16:01
2108-Mar-22 02:29 00:02 Jupiter 1.92523037525274 1.92522830389514 1.92523244662961 2.89619290728616 2.74007577862833 2491071.603320876 2.02630134636007 333.953232614093 10.7886371114378 -74.547427245521 2723456.70560209 T 23 CATAB v2.0g-lin.ifort 2021-Aug-25 16:01:44 2021-Aug-25 16:01
2142-Nov-23 16:35 00:02 Jupiter 1.49989191804992 1.49989052274337 1.49989331339322 2.45602926073415 2.21418946788282 2503736.191083424 2.0410973678424 403.395906743682 17.137777054881 -81.2764310963928 1848769.919232 T 23 CATAB v2.0g-lin.ifort 2021-Aug-25 16:01:44 2021-Aug-25 16:01
2177-Oct-12 04:02 00:02 Jupiter 1.40684218731816 1.40684141869884 1.40684295593933 2.20006353459892 1.90686454626767 2516477.667831764 2.37562523558629 228.220689189987 76.8047442690174 84.2339532031301 1503310.31810595 T 23 CATAB v2.0g-lin.ifort 2021-Aug-25 16:01:44 2021-Aug-25 16:01

Alternate Designations
 1994 GD1 = 1979 HB5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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