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3655 Eupraksia (1978 SA3)
Classification: Outer Main-belt Asteroid          SPK-ID: 2003655
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2016691655127611 2.4374e-08  
a 4.019681803389928 3.0453e-08 au
q 3.20903592847345 1.0212e-07 au
i 3.821835427118786 9.5875e-07 deg
node 338.015491057002 1.0423e-05 deg
peri 39.53835627703829 1.1628e-05 deg
M 91.02862667437451 6.8659e-06 deg
tp 2458456.177014708386
(2018-Dec-03.67701471)
5.4276e-05 TDB
period 2943.648437798672
8.06
3.3452e-05
9.159e-08
d
yr
n .1222972130018408 1.3898e-09 deg/d
Q 4.830327678306406 3.6595e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2360  
   data-arc span      24337 days (66.63 yr)  
   first obs. used      1954-08-04  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44131  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:08:23  

Additional Information
 Earth MOID = 2.21075 au 
 Jupiter MOID = .70956 au 
 T_jup = 3.012 
[ 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 11.06   n/a MPCxxxxx  
diameter diameter 36.657 km 0.269 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
rotation period rot_per 75.668 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.063   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

3655 Eupraksia (1978 SA3)          Discovered 1978-Sep-26 by Zhuravleva, L. at Nauchnyj
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
1916-Oct-29 10:59 < 00:01 Jupiter 1.99948994812694 1.99948960622715 1.99949029002673 5.54819046015819 5.47130503657477 2421165.957626998 0.543929617432671 16.2835959054188 15.3404760378422 -24.096010251677 6160271.98859752 T 41 CATAB v2.0g-lin.ifort 2021-May-03 21:09:31 2021-May-03 21:09
1939-Jul-20 07:33 < 00:01 Jupiter 1.88720696354894 1.88720667678486 1.88720725031302 5.07604127237147 4.98683750904581 2429464.814724122 0.972648596941901 28.2627253355104 13.1595656179849 84.4784384681514 7386712.43283082 T 41 CATAB v2.0g-lin.ifort 2021-May-03 21:09:31 2021-May-03 21:09
1962-Jul-13 13:53 00:01 Jupiter 1.70793835241611 1.70793783881369 1.70793886601852 4.17229570149665 4.05168927517562 2437859.078560329 1.40066947934015 31.3127032981303 11.6398953373688 49.8960898074659 5503844.03511675 T 41 CATAB v2.0g-lin.ifort 2021-May-03 21:09:31 2021-May-03 21:09
1986-Feb-08 19:23 00:01 Jupiter 1.63034953092465 1.6303489950802 1.6303500667691 3.87442293031024 3.73792515068013 2446470.307633216 1.18281121731652 26.2053938656726 10.923755776809 34.5947869746136 4450626.87012629 T 41 CATAB v2.0g-lin.ifort 2021-May-03 21:09:31 2021-May-03 21:09
2010-May-20 08:12 < 00:01 Jupiter 1.68578216014389 1.68578185142617 1.6857824688616 4.28854468476197 4.16973788297193 2455336.841980759 0.331657828487325 15.0037035816026 9.89226941865201 29.4157516584255 6782208.72483519 T 41 CATAB v2.0g-lin.ifort 2021-May-03 21:09:31 2021-May-03 21:09
2035-Jan-04 15:11 < 00:01 Jupiter 1.74718778779695 1.74718749725412 1.74718807833977 4.54140553198629 4.43337122049135 2464332.132958240 0.764069171427433 19.6969232989166 13.14341995275 87.7690061089385 6404695.56735703 T 41 CATAB v2.0g-lin.ifort 2021-May-03 21:09:31 2021-May-03 21:09
2059-Aug-23 04:58 00:02 Jupiter 1.71354984489884 1.71354941537233 1.71355027442534 4.12610801750215 4.0045162094074 2473328.707065626 1.5103375139554 30.0616508342129 13.6793706374835 -64.3552389473814 4637884.33013589 T 41 CATAB v2.0g-lin.ifort 2021-May-03 21:09:31 2021-May-03 21:09
2083-Dec-05 10:23 00:02 Jupiter 1.66051715320407 1.66051660834335 1.6605176980648 3.62518268888348 3.48163155813984 2482198.932431760 1.67146240330772 30.7686279347827 12.9998221434535 -56.0103774063568 3550065.03217821 T 41 CATAB v2.0g-lin.ifort 2021-May-03 21:09:31 2021-May-03 21:09
2107-Jun-22 05:27 < 00:01 Jupiter 1.74738105094247 1.74738081512217 1.74738128676276 3.99406825205378 3.87080154649071 2490797.727157244 0.835537768166978 20.4869316247828 9.03775675436784 73.4706351868979 7211220.86542243 T 41 CATAB v2.0g-lin.ifort 2021-May-03 21:09:31 2021-May-03 21:09
2130-Jun-02 22:52 < 00:01 Jupiter 1.91296548762624 1.91296498405346 1.91296599119902 5.03738272966994 4.94870337850913 2499179.452535868 0.633690972239949 23.4032505080576 19.3280832722883 -8.98604361918782 3914354.58552993 T 41 CATAB v2.0g-lin.ifort 2021-May-03 21:09:31 2021-May-03 21:09
2153-Feb-19 11:48 00:01 Jupiter 1.99051055792832 1.99051020102836 1.99051091482829 5.63026270219302 5.55416938341395 2507476.991623906 1.26997651010769 41.4240226788878 15.4382825274136 -79.6477434712284 6582522.28487964 T 41 CATAB v2.0g-lin.ifort 2021-May-03 21:09:31 2021-May-03 21:09
2175-Nov-07 00:15 00:02 Jupiter 1.9235267193587 1.92352637514777 1.92352706356974 5.15862203793758 5.072542154445 2515772.510657869 1.7631868762025 34.8316972675695 6.51813910467691 65.7529451051875 14310964.6685234 T 41 CATAB v2.0g-lin.ifort 2021-May-03 21:09:31 2021-May-03 21:09
2198-Oct-02 11:40 00:02 Jupiter 1.75379027384282 1.75378947197062 1.75379107571481 4.12107334477266 4.00216339914093 2524137.985892636 1.85359727686175 33.6609432132073 10.0576698268285 -8.14924214055248 1915504.32576806 T 41 CATAB v2.0g-lin.ifort 2021-May-03 21:09:31 2021-May-03 21:09

Alternate Designations
 1978 SA3 = 1979 YW2 = 1981 ED49 = 1982 FZ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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