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JPL Small-Body Database Browser
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305 Gordonia
Classification: Main-belt Asteroid          SPK-ID: 2000305
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 52 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1954547754901617 3.6817e-08  
a 3.088414714958666 1.2201e-08 au
q 2.484769310225908 1.1483e-07 au
i 4.450166437144722 3.901e-06 deg
node 207.476229365959 5.3939e-05 deg
peri 260.8525476139716 5.4729e-05 deg
M 224.8631110044537 1.0701e-05 deg
tp 2459344.671892081204
(2021-May-10.17189208)
6.1312e-05 TDB
period 1982.44819116757
5.43
1.1748e-05
3.216e-08
d
yr
n .181593648501844 1.0761e-09 deg/d
Q 3.692060119691424 1.4586e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2700  
   data-arc span      46582 days (127.53 yr)  
   first obs. used      1892-05-24  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47036  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:40:37  

Additional Information
 Earth MOID = 1.50652 au 
 Jupiter MOID = 1.49373 au 
 T_jup = 3.191 
[ 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 8.8   n/a MPO502155 IRAS observations used: 22
diameter diameter 47.739 km 0.194 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 12.893 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Menke, J.; Cooney, W.; Gross, J.; Terrell, D. (2008) Minor Planet Bull. 35, 155-160.]
[Marciniak, A.; Pilcher, F.; Oszkiewicz, D.; Santana-Ros, T.; et al. (2015) Planet. Space Sci. 118, 256-266.]
geometric albedo albedo 0.238   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.919   0.013 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=4.79, mean=9.68, max.=14.58) deg.
U-B UB 0.507   0.018 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=4.79, mean=9.68, max.=14.58) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

305 Gordonia          Discovered 1891-Feb-16 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1938 SC1 = 1970 SP1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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