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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 ]

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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07861660701406949 1.6414e-08  
a 3.210752645558137 1.5337e-08 au
q 2.958334166602909 5.5627e-08 au
i 14.19973809662307 3.6537e-07 deg
node 43.69902468292561 4.1847e-06 deg
peri 121.2078862880434 1.5768e-05 deg
M 158.745477826014 1.8022e-05 deg
tp 2458273.867427714947
(2018-Jun-04.36742772)
0.00010319 TDB
period 2101.399867202726
5.75
1.5056e-05
4.122e-08
d
yr
n .1713143726801568 1.2275e-09 deg/d
Q 3.463171124513365 1.6542e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2617  
   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      .3681  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 11:45:25  

Additional Information
 Earth MOID = 1.99031 au 
 Jupiter MOID = 1.57693 au 
 T_jup = 3.139 
[ 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 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

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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
1964-Sep-04 22:57 00:01 Jupiter 1.78739460469707 1.78739388304438 1.78739532635443 4.57753240323324 4.47281002496687 2438643.456316192 1.25636310335712 150.599330201912 4.47294066408428 -76.8386109051742 15981623.1053574 T 35 CATAB v2.0f-lin.ifort 2021-Mar-16 11:46:33 2021-Mar-16 11:46
1975-Nov-11 15:58 < 00:01 Jupiter 1.65995620717831 1.65995594259252 1.65995647176571 4.12762533025991 4.00209381309703 2442728.165148730 0.936825305802515 87.2208220017047 4.85664910106068 -83.2519489234234 21748483.9006563 T 35 CATAB v2.0f-lin.ifort 2021-Mar-16 11:46:33 2021-Mar-16 11:46
1987-Jan-19 23:49 < 00:01 Jupiter 1.68020903358631 1.68020881846992 1.68020924870471 3.48029376451415 3.33229800570131 2446815.492245052 0.683721967286256 99.004984114841 3.44881601961613 -82.9525726441971 6625339.68215809 T 35 CATAB v2.0f-lin.ifort 2021-Mar-16 11:46:33 2021-Mar-16 11:46
1998-Mar-04 04:13 < 00:01 Jupiter 1.80741859361335 1.80741840144365 1.80741878578419 2.57144432315005 2.38223690982508 2450876.675764208 0.458281291924873 84.1522258204729 5.03165235442369 -80.3439214501733 6556243.16028099 T 35 CATAB v2.0f-lin.ifort 2021-Mar-16 11:46:33 2021-Mar-16 11:46
2009-Mar-06 19:21 < 00:01 Jupiter 1.95844959773822 1.95844947496854 1.9584497205079 2.30987378301676 2.11436136358431 2454897.306592947 0.173028007486994 11.2392525999947 2.03161162651598 79.4135203918491 10036897.6778047 T 35 CATAB v2.0f-lin.ifort 2021-Mar-16 11:46:33 2021-Mar-16 11:46
2131-May-06 12:39 00:02 Jupiter 1.94329731401928 1.94329591075357 1.9432987172926 4.58104377562173 4.48488847476812 2499517.027236804 2.04647533786772 206.635242869788 5.80563312020304 -70.5024652592806 11775598.1115062 T 35 CATAB v2.0f-lin.ifort 2021-Mar-16 11:46:33 2021-Mar-16 11:46
2142-Jun-28 10:10 00:02 Jupiter 1.71038725315314 1.71038628413038 1.71038822219156 4.36333709704895 4.24832500091393 2503587.923455342 2.07287322291171 267.274120538492 4.46031153035488 -80.0135937584499 15341057.9318147 T 35 CATAB v2.0f-lin.ifort 2021-Mar-16 11:46:33 2021-Mar-16 11:46
2153-Sep-11 21:03 00:02 Jupiter 1.61429214053475 1.61429194014703 1.6142923409244 4.01958305185229 3.88685524062908 2507681.376918199 2.2230540205406 159.732905384338 8.7576032065827 -89.403579448202 21786524.7547157 T 35 CATAB v2.0f-lin.ifort 2021-Mar-16 11:46:33 2021-Mar-16 11:46
2164-Nov-25 01:50 00:03 Jupiter 1.67421888371157 1.67421792119421 1.6742198462767 3.47793329445884 3.32929091130581 2511773.576552213 2.69519010623454 459.842322649132 4.6474408476068 -82.6177245671666 8072024.14388243 T 35 CATAB v2.0f-lin.ifort 2021-Mar-16 11:46:33 2021-Mar-16 11:46
2176-Jan-05 23:12 00:04 Jupiter 1.84000649314541 1.84000491776953 1.84000806856962 2.68137167230378 2.50381322114163 2515832.466325510 3.55075920598865 495.459029570362 5.11108274636091 -76.8019265460493 7630949.0460154 T 35 CATAB v2.0f-lin.ifort 2021-Mar-16 11:46:33 2021-Mar-16 11:46

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