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806 Gyldenia (A915 HE)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000806
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07861667057922551 3.9399e-08  
a 3.21075265068385 1.5852e-08 au
q 2.958333967233663 1.2515e-07 au
i 14.19972426025658 4.1445e-06 deg
node 43.69903059568031 1.7174e-05 deg
peri 121.2078581731782 3.0739e-05 deg
M 158.745497854771 2.6145e-05 deg
tp 2458273.867308583705
(2018-Jun-04.36730858)
0.00015203 TDB
period 2101.399872234805
5.75
1.5562e-05
4.261e-08
d
yr
n .171314372269922 1.2687e-09 deg/d
Q 3.463171334134037 1.7098e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2584  
   data-arc span      38600 days (105.68 yr)  
   first obs. used      1915-04-18  
   last obs. used      2020-12-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36514  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:49:57  

Additional Information
 Earth MOID = 1.99031 au 
 Jupiter MOID = 1.57693 au 
 T_jup = 3.139 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456914.5 (2014-Sep-14.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07501845397265446 3.9072e-08  
q 2.969731938021414 1.2303e-07 au
tp 2456160.177173599065
(2012-Aug-20.67717360)
0.00015948 TDB
node 44.00671700473622 1.7103e-05 deg
peri 119.0015088667594 3.2043e-05 deg
i 14.23662319092708 4.1503e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2584  
   data-arc span      38600 days (105.68 yr)  
   first obs. used      1915-04-18  
   last obs. used      2020-12-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36514  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:49:57  

Additional Information
 Jupiter MOID = 1.57693 au 
 T_jup = 3.139 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.526588902913714E-15 -4.776519364260458E-15 7.090496136223249E-14 -6.372444482091731E-16 1.045058217641535E-14 6.502793698888563E-16
q -4.776519364260458E-15 1.513642134222465E-14 -1.216133392730175E-13 7.796575041597974E-15 -1.098190254728602E-14 -4.175776600380895E-16
tp 7.090496136223249E-14 -1.216133392730175E-13 2.543248058443516E-8 -2.621602585752536E-12 4.351139461229737E-9 -7.96443879738183E-12
node -6.372444482091731E-16 7.796575041597974E-15 -2.621602585752536E-12 2.925065522336218E-10 -2.829110952146768E-10 -2.272616039074826E-12
peri 1.045058217641535E-14 -1.098190254728602E-14 4.351139461229737E-9 -2.829110952146768E-10 1.026725177480629E-9 1.124915868684822E-12
i 6.502793698888563E-16 -4.175776600380895E-16 -7.96443879738183E-12 -2.272616039074826E-12 1.124915868684822E-12 1.722480889797849E-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 10.25   n/a E2021B10  
diameter diameter 83.103 km 0.741 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 16.852 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Alkema, M.S. (2013) Minor Planet Bull. 40, 215-216.]
[Marciniak, A.; Pilcher, F.; Oszkiewicz, D.; Santana-Ros, T.; et al. (2015) Planet. Space Sci. 118, 256-266.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.023   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

806 Gyldenia (A915 HE)          Discovered 1915-Apr-18 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A915 HE = 1950 LT 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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