Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
17 Thetis (A852 HA)
Classification: Main-belt Asteroid          SPK-ID: 2000017
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 111 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1333227306129338 2.6675e-08  
a 2.470964690471589 3.1117e-09 au
q 2.141528930689774 6.5816e-08 au
i 5.592662110044438 2.8973e-06 deg
node 125.5396707330032 2.6024e-05 deg
peri 135.9741470811564 2.749e-05 deg
M 45.07427315419709 9.716e-06 deg
tp 2458822.866665838420
(2019-Dec-05.36666584)
3.8155e-05 TDB
period 1418.725046977583
3.88
2.6799e-06
7.337e-09
d
yr
n .2537489563371953 4.7932e-10 deg/d
Q 2.800400450253404 3.5266e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3736  
   data-arc span      61421 days (168.16 yr)  
   first obs. used      1852-04-17  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5424  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:05:44  

Additional Information
 Earth MOID = 1.13008 au 
 Jupiter MOID = 2.2735 au 
 T_jup = 3.465 
[ hide covariance matrix ]
Orbital Elements at Epoch 2452748.5 (2003-Apr-19.0) TDB
Reference: JPL 111 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .134241778367822 2.6959e-08  
q 2.13957728989505 6.6541e-08 au
tp 2453148.250827411945
(2004-May-22.75082741)
3.4809e-05 TDB
node 125.6273428677917 2.6061e-05 deg
peri 135.6333523642923 2.7468e-05 deg
i 5.587521083192017 2.8979e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3736  
   data-arc span      61421 days (168.16 yr)  
   first obs. used      1852-04-17  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5424  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:05:44  

Additional Information
 Jupiter MOID = 2.2735 au 
 T_jup = 3.465 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.268145759696262E-16 -1.79253851076187E-15 1.611062558281561E-13 -5.977765682875295E-15 4.813757336629421E-14 -5.789939862676591E-16
q -1.79253851076187E-15 4.427728464617612E-15 -3.855744187300088E-13 1.389117788044119E-14 -1.155168339171794E-13 1.532197199029171E-15
tp 1.611062558281561E-13 -3.855744187300088E-13 1.21166678764596E-9 -8.211405020313433E-13 3.086922002561763E-10 -1.055664976601257E-12
node -5.977765682875295E-15 1.389117788044119E-14 -8.211405020313433E-13 6.791542646402221E-10 -6.758352569237828E-10 -1.816946256103329E-11
peri 4.813757336629421E-14 -1.155168339171794E-13 3.086922002561763E-10 -6.758352569237828E-10 7.544899203035707E-10 1.781631842874011E-11
i -5.789939862676591E-16 1.532197199029171E-15 -1.055664976601257E-12 -1.816946256103329E-11 1.781631842874011E-11 8.398008413344852E-12

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 7.7   n/a MPO492748 IRAS observations used: 10
diameter diameter 84.899 km 2.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 12.27048 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic)
Published Reference List:
[Groeneveld, I.; Kuiper, G.P. (1954) Astrophys. J. 120, 200-220.]
[Michalowski, T.; Velichko, F.P.; Di Martino, M.; Krugly, et al. (1995) Icarus 118, 292-301.]
[Torppa, J.; Kaasalainen, M.; Michalowski, T.; Kwiatkowski, T.; et al. (2003) Icarus 164, 346-383.]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Kaasalainen, M.; Warner, B.D.; Fauerbach, M.; et al. (2009) Astron. Astrophys. 493, 291-297.]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Kaasalainen, M.; Herald, D.; Dunham, D.; et al. (2011) Icarus 214, 652-670.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.193   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.829   0.022 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=25; phase (min.=.64, mean=7.44, max.=23.88) deg.
U-B UB 0.438   0.035 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=23; phase (min.=.64, mean=7.45, max.=23.88) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Sl   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

17 Thetis (A852 HA)          Discovered 1852-Apr-17 by Luther, R. at Dusseldorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A852 HA = 1954 SO1 = A913 CA = A916 YF 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-26 13:27 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin