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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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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2252525956682988 5.1708e-08  
a 2.937233182955784 1.2164e-08 au
q 2.275613784411935 1.5125e-07 au
i 10.90808732256516 4.4185e-06 deg
node 67.449559356 2.7381e-05 deg
peri 142.3095156373738 2.8631e-05 deg
M 108.7139980701483 8.504e-06 deg
tp 2458645.249404903658
(2019-Jun-10.74940490)
4.3203e-05 TDB
period 1838.679634481873
5.03
1.1421e-05
3.127e-08
d
yr
n .1957926727683833 1.2162e-09 deg/d
Q 3.598852581499634 1.4903e-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-Apr-13 06:42:35  

Additional Information
 Earth MOID = 1.2792 au 
 Jupiter MOID = 1.4184 au 
 T_jup = 3.209 
[ 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

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