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 ]  
258 Tyche (A886 JA)
Classification: Main-belt Asteroid          SPK-ID: 2000258
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 81 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2045401749114091 2.3156e-08  
a 2.615168418092624 5.4203e-09 au
q 2.080261412433166 6.0029e-08 au
i 14.32337148440509 3.5573e-07 deg
node 207.5440164934058 1.306e-06 deg
peri 155.614429315068 4.5579e-06 deg
M 169.9252923837225 3.0813e-06 deg
tp 2458471.372554137154
(2018-Dec-18.87255414)
1.2091e-05 TDB
period 1544.713425697001
4.23
4.8024e-06
1.315e-08
d
yr
n .2330529365584829 7.2455e-10 deg/d
Q 3.150075423752082 6.5289e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3162  
   data-arc span      49253 days (134.85 yr)  
   first obs. used      1886-05-09  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46259  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:35:24  

Additional Information
 Earth MOID = 1.08613 au 
 Jupiter MOID = 2.35217 au 
 T_jup = 3.334 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456965.5 (2014-Nov-04.0) TDB
Reference: JPL 81 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2045734978668254 2.3549e-08  
q 2.080170421542629 6.1231e-08 au
tp 2456921.325405772562
(2014-Sep-20.82540577)
1.0765e-05 TDB
node 207.643577770673 1.3135e-06 deg
peri 154.6886147297545 4.5238e-06 deg
i 14.29859107573907 3.5571e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3162  
   data-arc span      49253 days (134.85 yr)  
   first obs. used      1886-05-09  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46259  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:35:24  

Additional Information
 Jupiter MOID = 2.35217 au 
 T_jup = 3.334 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.545587886355856E-16 -1.438463685858494E-15 -1.76615452690615E-13 1.054784822513103E-14 -8.609058039625985E-14 -8.501064806475677E-17
q -1.438463685858494E-15 3.749289954614708E-15 4.651304885689204E-13 -2.767864806072677E-14 2.259427637061113E-13 2.622115869273118E-16
tp -1.76615452690615E-13 4.651304885689204E-13 1.158759491223168E-10 -8.937016784102442E-12 4.680541361252236E-11 1.244434987735142E-13
node 1.054784822513103E-14 -2.767864806072677E-14 -8.937016784102442E-12 1.725248615678796E-12 -4.173787972344389E-12 -1.418246552631772E-13
peri -8.609058039625985E-14 2.259427637061113E-13 4.680541361252236E-11 -4.173787972344389E-12 2.046511861200436E-11 1.227996171491196E-13
i -8.501064806475677E-17 2.622115869273118E-16 1.244434987735142E-13 -1.418246552631772E-13 1.227996171491196E-13 1.265283924461442E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.37   n/a E2021B10 IRAS observations used: 23
magnitude slope G 0.23   n/a PDS3 (MPC 17258) Fit
diameter diameter 64.78 km 1.2 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 23
rotation period rot_per 10.041 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.]
[Schober, H.J.; Erikson, A.; Hahn, G.; Lagerkvist, C.-I.; et al. (1994) Astron. Astrophys. Suppl. Ser. 105, 281-300.]
[Behrend, R. (2001) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Riccioli, D.; Blanco, C.; Cigna, M. (2001) Planet. Space Sci. 49, 657-671.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Behrend, R. (2014) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.1676   0.006 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 23
B-V BV 0.876   0.025 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=7.39, mean=14.10, max.=25.73) deg.
U-B UB 0.459   0.036 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=7.39, mean=14.10, max.=25.73) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B S   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)

258 Tyche (A886 JA)          Discovered 1886-May-04 by Luther, R. at Dusseldorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-13 17:55 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin