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 ]  
181 Eucharis (A878 CB)
Classification: Main-belt Asteroid          SPK-ID: 2000181
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 71 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2067907137538732 3.5032e-08  
a 3.124488676978364 1.137e-08 au
q 2.478373433350113 1.0924e-07 au
i 18.89346266991061 4.4608e-06 deg
node 143.0198639943586 1.1198e-05 deg
peri 318.9291749057308 1.468e-05 deg
M 281.922338172993 1.0944e-05 deg
tp 2459438.013197490082
(2021-Aug-11.51319749)
6.2545e-05 TDB
period 2017.283143614182
5.52
1.1012e-05
3.015e-08
d
yr
n .1784578437288783 9.7414e-10 deg/d
Q 3.770603920606614 1.3722e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2696  
   data-arc span      46727 days (127.93 yr)  
   first obs. used      1892-08-27  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4079  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:11:34  

Additional Information
 Earth MOID = 1.52406 au 
 Jupiter MOID = 1.46386 au 
 T_jup = 3.100 
[ 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 7.9   n/a MPO502154 IRAS observations used: 12
diameter diameter 115.383 km 1.464 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 52.23 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2008) Minor Planet Bull. 35, 21-22.]
geometric albedo albedo 0.101   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.815   0.015 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=11.97, mean=15.58, max.=19.39) deg.
U-B UB 0.379   0.043 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=11.97, mean=15.58, max.=19.39) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 4 color indices
SMASSII spectral type spec_B Xk   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)

181 Eucharis (A878 CB)          Discovered 1878-Feb-02 by Cottenot at Marseille
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
1903-Oct-14 15:24 00:02 Jupiter 1.89987886073565 1.89987681402408 1.89988090745511 4.7848799161742 4.69077992598245 2416402.141970792 1.95258546217687 222.69290966187 20.3663762885367 63.4491661064074 4334082.8443631 T 71 CATAB v2.0f-lin.ifort 2020-Aug-24 22:11:51 2020-Aug-24 22:11
1914-Mar-31 17:06 00:01 Jupiter 1.51778223794356 1.51778171072683 1.51778276516512 4.37280502756665 4.24326430973573 2420223.212600681 1.45710444139195 246.230021057455 21.2314179842012 -86.3360501356478 3149661.63260303 T 71 CATAB v2.0f-lin.ifort 2020-Aug-24 22:11:51 2020-Aug-24 22:11
1986-Sep-22 21:52 < 00:01 Jupiter 1.84559841304917 1.84559766085308 1.84559916524579 4.70532602301435 4.60675689647509 2446696.410952993 0.530490436185869 73.9831201903374 20.4167233780844 64.3208586340152 4027191.50556686 T 71 CATAB v2.0f-lin.ifort 2020-Aug-24 22:11:51 2020-Aug-24 22:11
1997-Mar-15 11:34 < 00:01 Jupiter 1.5264638358007 1.52646341610269 1.52646425549881 4.36683988168088 4.23786581008131 2450522.981723764 0.310786770414153 80.8521048069505 19.3490585498958 86.8838345218221 3151091.35337254 T 71 CATAB v2.0f-lin.ifort 2020-Aug-24 22:11:51 2020-Aug-24 22:11
2069-Aug-25 08:27 < 00:01 Jupiter 1.77837908812366 1.77837816126603 1.77838001498453 4.63967007468012 4.53585276092966 2476983.852232267 0.949450875618831 140.678474129468 19.3439375657453 72.5915799278736 3793734.89278327 T 71 CATAB v2.0f-lin.ifort 2020-Aug-24 22:11:51 2020-Aug-24 22:11
2080-Feb-23 02:18 00:01 Jupiter 1.533804555499 1.53380377576166 1.53380533523869 4.36117695416786 4.23265777893818 2480817.596167569 1.04075149665606 139.767872521505 27.1875923632009 -78.1789381615686 3148424.21231686 T 71 CATAB v2.0f-lin.ifort 2020-Aug-24 22:11:51 2020-Aug-24 22:11
2152-Jul-24 17:05 00:02 Jupiter 1.7150608954222 1.7150588435556 1.71506294731522 4.59916172500438 4.49049465934843 2507267.211710415 2.26494206485981 360.743167416985 18.7113666524462 73.7825001460539 3616992.74735449 T 71 CATAB v2.0f-lin.ifort 2020-Aug-24 22:11:51 2020-Aug-24 22:11
2163-Jan-26 23:16 00:02 Jupiter 1.56680683411876 1.56680515624069 1.56680851201287 4.34224789923222 4.21591131468173 2511105.469202615 2.25892593503223 283.04734683422 29.3988475171435 -73.4104518247103 3139577.14328857 T 71 CATAB v2.0f-lin.ifort 2020-Aug-24 22:11:51 2020-Aug-24 22:11

Alternate Designations
 A878 CB = A906 GA 
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-28 09:54 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin