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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07731796541295939 3.9323e-08  
a 3.214292399222694 1.5792e-08 au
q 2.965769850672456 1.2478e-07 au
i 14.20151676597684 4.1643e-06 deg
node 43.83362690559759 1.7163e-05 deg
peri 121.2671550496439 3.1219e-05 deg
M 124.3860642914414 2.6658e-05 deg
tp 2458273.229914000463
(2018-Jun-03.72991400)
0.00015549 TDB
period 2104.875915571904
5.76
1.5512e-05
4.247e-08
d
yr
n .1710314595443439 1.2605e-09 deg/d
Q 3.462814947772933 1.7013e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2544  
   data-arc span      38564 days (105.58 yr)  
   first obs. used      1915-04-18  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .3674  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:56:17  

Additional Information
 Earth MOID = 1.99797 au 
 Jupiter MOID = 1.57742 au 
 T_jup = 3.138 
[ 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 10.2   n/a MPO452169  
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 1.78739467886092 1.78739377113733 1.78739558659153 4.57752984448222 4.47280741070358 2438643.456292048 1.39252101150483 203.666888467187 17.3012538523925 -78.6686006118533 3365238.72394228 T 33 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:22 2020-Dec-18 01:56
1975-Nov-11 15:58 00:01 Jupiter 1.65995612749464 1.65995566946789 1.65995658552432 4.12762208496623 4.00209045988943 2442728.165060494 1.04639482932537 192.053384114531 15.2355178920718 -85.8737956868656 2905551.12734289 T 33 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:22 2020-Dec-18 01:56
1987-Jan-19 23:49 < 00:01 Jupiter 1.68020870699328 1.68020826279935 1.68020915118751 3.48029019100723 3.33229424408003 2446815.492104835 0.774338597126709 266.419378576981 20.4094608168054 -88.1601200880302 3047095.17755495 T 33 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:22 2020-Dec-18 01:56
1998-Mar-04 04:13 < 00:01 Jupiter 1.8074180109075 1.80741747191072 1.80741854990427 2.57144175141701 2.38223407041143 2450876.675649417 0.567660469734084 172.176174787454 28.7051993712744 -85.5731418782772 2436724.26602376 T 33 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:22 2020-Dec-18 01:56
2009-Mar-06 19:21 < 00:01 Jupiter 1.95844891958119 1.9584483704315 1.95844946873089 2.30987270641795 2.11436011660295 2454897.306587169 0.351875956298206 48.983481946358 12.868837916419 66.0476481078971 3092557.61216978 T 33 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:22 2020-Dec-18 01:56
2131-May-06 12:39 00:02 Jupiter 1.94329711703654 1.94329567235606 1.94329856172453 4.58104165667121 4.48488630053632 2499517.027067928 2.07071350960323 213.534049449894 18.0979152477227 -71.1886320255052 3669811.91839518 T 33 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:22 2020-Dec-18 01:56
2142-Jun-28 10:09 00:02 Jupiter 1.71038709969247 1.71038610510623 1.71038809429301 4.36333388760796 4.24832169412691 2503587.923234961 2.11041827416595 277.790618350998 16.4851539552145 -80.7749666820208 3111318.66516399 T 33 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:22 2020-Dec-18 01:56
2153-Sep-11 21:02 00:02 Jupiter 1.61429196502056 1.61429157331871 1.6142923567236 4.0195792765901 3.88685132177235 2507681.376658830 2.28028411760393 218.374028060389 17.3490073040668 -88.4008016353239 2605555.57319285 T 33 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:22 2020-Dec-18 01:56
2164-Nov-25 01:50 00:03 Jupiter 1.67421860021055 1.67421751615476 1.67421968431829 3.47792919500974 3.32928660309693 2511773.576240655 2.77670982090704 594.924668425982 32.3728803613574 -84.5808334662178 3326294.46526386 T 33 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:22 2020-Dec-18 01:56
2176-Jan-05 23:11 00:04 Jupiter 1.84000605189495 1.84000438684739 1.84000771698947 2.68136867171082 2.5038099636707 2515832.466009582 3.652968870863 530.683240431496 35.4564922315876 -77.7688320489411 2628008.85306202 T 33 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:22 2020-Dec-18 01:56

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