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730 Athanasia (A912 GG)
Classification: Main-belt Asteroid          SPK-ID: 2000730
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1778041375211677 3.0768e-08  
a 2.243962921512258 6.4915e-09 au
q 1.844977029623292 6.9887e-08 au
i 4.234750849888208 3.1701e-06 deg
node 95.07344403310465 4.8916e-05 deg
peri 123.5976527804053 5.0016e-05 deg
M 52.39330108362891 1.1517e-05 deg
tp 2458821.812075983440
(2019-Dec-04.31207598)
3.9035e-05 TDB
period 1227.783921140667
3.36
5.3277e-06
1.459e-08
d
yr
n .2932112025587886 1.2723e-09 deg/d
Q 2.642948813401225 7.6457e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2325  
   data-arc span      39514 days (108.18 yr)  
   first obs. used      1912-04-11  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47298  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:19:38  

Additional Information
 Earth MOID = .841149 au 
 Jupiter MOID = 2.33366 au 
 T_jup = 3.608 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456597.5 (2013-Nov-01.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1776653225370849 3.0714e-08  
q 1.844971166763845 6.9729e-08 au
tp 2456367.096048356330
(2013-Mar-15.59604836)
3.7177e-05 TDB
node 95.10256955305262 4.8905e-05 deg
peri 123.580384862277 5.0009e-05 deg
i 4.235340431000419 3.1706e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2325  
   data-arc span      39514 days (108.18 yr)  
   first obs. used      1912-04-11  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47298  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:19:38  

Additional Information
 Jupiter MOID = 2.33366 au 
 T_jup = 3.608 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.433419915707383E-16 -2.135446504634673E-15 -3.544025560619423E-13 1.007374401899584E-14 -9.613121910429147E-14 -2.472670726234163E-16
q -2.135446504634673E-15 4.862150890705129E-15 8.025043653044324E-13 -2.277756627000537E-14 2.188490705489004E-13 6.275373063649131E-16
tp -3.544025560619423E-13 8.025043653044324E-13 1.382099263977921E-9 -1.188329698187124E-11 4.022488630920921E-10 1.145698450818088E-12
node 1.007374401899584E-14 -2.277756627000537E-14 -1.188329698187124E-11 2.391695593807025E-9 -2.387992803877824E-9 1.341619488681232E-11
peri -9.613121910429147E-14 2.188490705489004E-13 4.022488630920921E-10 -2.387992803877824E-9 2.500902261164253E-9 -1.306996635566536E-11
i -2.472670726234163E-16 6.275373063649131E-16 1.145698450818088E-12 1.341619488681232E-11 -1.306996635566536E-11 1.005256732261509E-11

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 13.7   n/a MPO473771  
diameter diameter 4.497 km 0.734 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 5.7348 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pilcher, F. (2013) Minor Planet Bull. 40, 194-195.]
[Pilcher, F. (2016) Minor Planet Bull. 43, 222-224.]
geometric albedo albedo 0.289   0.123 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

730 Athanasia (A912 GG)          Discovered 1912-Apr-10 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A912 GG = 2016 FP6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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