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 ]  
405 Thia (A895 OB)
Classification: Main-belt Asteroid          SPK-ID: 2000405
[ 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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 116 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2432909592793697 3.5692e-08  
a 2.584246297254436 5.1388e-09 au
q 1.955522536581245 9.1649e-08 au
i 11.93882728202446 3.462e-06 deg
node 255.2065024272586 1.8348e-05 deg
peri 308.7927607675292 1.9489e-05 deg
M 146.8399277837524 8.9919e-06 deg
tp 2458581.570842840840
(2019-Apr-08.07084284)		 3.7226e-05 TDB
period 1517.397208921481
4.15		 4.526e-06
1.239e-08		 d
yr
n .2372483604710706 7.0766e-10 deg/d
Q 3.212970057927627 6.389e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2938  
   data-arc span      44407 days (121.58 yr)  
   first obs. used      1899-06-22  
   last obs. used      2021-01-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43015  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:46:18  

Additional Information
 Earth MOID = .973285 au 
 Jupiter MOID = 1.87993 au 
 T_jup = 3.351 
[ 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 8.57   n/a E2021B10 IRAS observations used: 15
diameter diameter 108.894 km 0.312 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 9.950 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W. (1980) Icarus 43, 20-32.]
[Wang, X.-B. (2002) Earth, Moon, and Planets 91, 25-30.]
[Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.018   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
B-V BV 0.698   0.019 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=2.35, mean=16.80, max.=27.16) deg.
U-B UB 0.388   0.039 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=2.35, mean=16.80, max.=27.16) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B Ch   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)

405 Thia (A895 OB)          Discovered 1895-Jul-23 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ hide close-approach data ]
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
1905-Jun-23 19:47 < 00:01 Jupiter 1.92804576917935 1.92804527259154 1.92804626576847 3.16578414525915 3.02383135283397 2417020.323980305 0.848358357400699 132.178942383557 18.8465398895034 86.5164849125973 3294312.88324457 T 116 CATAB v2.0f-lin.ifort 2021-Feb-24 00:46:26 2021-Feb-24 00:46
1975-Jul-30 11:13 < 00:01 Jupiter 1.93234163722936 1.93234124989501 1.93234202456381 1.66300944417479 1.37438005405384 2442623.967248677 0.350322738487121 120.826516234131 102.861630805777 -12.4448978295491 1351942.15058274 T 116 CATAB v2.0f-lin.ifort 2021-Feb-24 00:46:26 2021-Feb-24 00:46
1988-Jun-25 01:19 < 00:01 Jupiter 1.90618185516329 1.90618153441913 1.90618217590745 3.15225722990736 3.00799177407621 2447337.554556877 0.202667432974146 63.8397062193747 14.6265656313868 -83.2749969977694 3254279.200376 T 116 CATAB v2.0f-lin.ifort 2021-Feb-24 00:46:26 2021-Feb-24 00:46
2058-Jul-31 12:16 < 00:01 Jupiter 1.94485396525427 1.94485353874192 1.94485439176672 1.69239780080093 1.41179694266655 2472941.010991075 0.460562492299039 114.436365498747 97.4458688532138 10.143139325569 1366247.34706852 T 116 CATAB v2.0f-lin.ifort 2021-Feb-24 00:46:26 2021-Feb-24 00:46
2071-Jun-28 13:36 < 00:01 Jupiter 1.89091492586749 1.89091459264784 1.89091525908715 3.15704344954488 3.0118162140846 2477656.066752210 0.506970260163231 93.7671566337152 15.9382100235697 -87.8283157291559 3238807.46295002 T 116 CATAB v2.0f-lin.ifort 2021-Feb-24 00:46:26 2021-Feb-24 00:46
2141-Aug-04 16:06 00:01 Jupiter 1.95303952824329 1.95303884828781 1.95304020819943 1.74452197479237 1.4751162347647 2503260.170640671 1.19168707935248 146.741996052058 95.360182374999 -6.24514015853138 1159826.84220343 T 116 CATAB v2.0f-lin.ifort 2021-Feb-24 00:46:26 2021-Feb-24 00:46
2154-Jul-01 17:48 00:01 Jupiter 1.88121812315786 1.88121768815927 1.88121855815881 3.16555856122093 3.0199762735113 2507974.241799209 1.15717631263657 186.783549986076 17.3121381189532 88.6170695596249 3231062.56213058 T 116 CATAB v2.0f-lin.ifort 2021-Feb-24 00:46:26 2021-Feb-24 00:46

Alternate Designations
 A895 OB = 1950 XA = 1951 AO = 1956 EZ 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Feb-28 10:58 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin