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 ]  
3933 Portugal (1986 EN4)
Classification: Outer Main-belt Asteroid          SPK-ID: 2003933
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09617661695542208 3.1136e-08  
a 3.250704240190954 1.6809e-08 au
q 2.938062503646742 1.0132e-07 au
i 1.691350568758207 3.8322e-06 deg
node 42.70991178176234 0.00012513 deg
peri 250.6402553712352 0.00012677 deg
M 197.223555251466 2.1147e-05 deg
tp 2459968.451665456137
(2023-Jan-23.95166546)
0.00012668 TDB
period 2140.743398730285
5.86
1.6604e-05
4.546e-08
d
yr
n .1681658811670388 1.3043e-09 deg/d
Q 3.563345976735166 1.8425e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2638  
   data-arc span      24339 days (66.64 yr)  
   first obs. used      1953-09-06  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49167  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:01:17  

Additional Information
 Earth MOID = 1.92253 au 
 Jupiter MOID = 1.59895 au 
 T_jup = 3.173 
[ 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 12.5   n/a MPO384788  
diameter diameter 14.949 km 0.159 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.56077 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.087   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3933 Portugal (1986 EN4)          Discovered 1986-Mar-12 by West, R. M. at La Silla
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
1979-Oct-14 04:12 < 00:01 Jupiter 1.93022496074259 1.9302243672934 1.93022555419178 2.81813652706199 2.65786610710537 2444160.675166714 0.915879138121701 47.6377569260721 16.3493891563537 -76.5418653081141 2879666.26915228 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:01:29 2020-May-20 02:01
1991-Mar-13 16:52 < 00:01 Jupiter 1.80804950210642 1.80804902650908 1.80804997770367 2.41324353067336 2.21061036411111 2448329.202676505 0.637462273948546 43.6465066756759 9.54870701166702 -84.6970636696065 2922842.63471971 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:01:29 2020-May-20 02:01
2002-Aug-31 05:22 < 00:01 Jupiter 1.71877342625451 1.71877304858565 1.71877380392328 2.14987752860778 1.90692438799336 2452517.723371870 0.358840747957197 44.2318652214929 5.10280159703606 -86.458419012667 3159347.44718309 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:01:29 2020-May-20 02:01
2014-Mar-08 01:38 < 00:01 Jupiter 1.6580486003558 1.65804827380082 1.65804892691068 1.99821987123438 1.72370894744298 2456724.568188681 0.208747413453372 46.0237433849583 9.01975241215804 -85.5994670147736 3265624.73407973 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:01:29 2020-May-20 02:01
2025-Sep-22 16:13 < 00:01 Jupiter 1.62173773595706 1.62173742831988 1.62173804359405 1.93239508824038 1.63998916783473 2460941.175879378 0.411084411410541 47.2941777284864 12.41782457951 -85.0407785033661 3280345.92752904 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:01:29 2020-May-20 02:01
2037-Apr-10 11:37 < 00:01 Jupiter 1.60699462874507 1.6069943259937 1.60699493149633 1.94228055810198 1.64872195203888 2465158.984032730 0.74465453303365 46.9593474507204 12.7695660021442 -85.0911787861791 3246893.45998204 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:01:29 2020-May-20 02:01
2048-Oct-15 23:46 00:01 Jupiter 1.61572353603941 1.61572319310659 1.61572387897205 2.04472644261307 1.76986769565285 2469365.490124795 1.14685386592336 44.9427161903256 10.5956171824123 -87.106456490306 2845807.74557315 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:01:29 2020-May-20 02:01
2060-Apr-02 11:25 00:02 Jupiter 1.65951920452014 1.65951870801478 1.6595197010254 2.29332248811987 2.05876742681196 2473551.975678197 1.61090927188483 49.1559284937819 3.98431631225247 -88.3133686764091 2364394.69441528 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:01:29 2020-May-20 02:01
2071-Aug-21 14:39 00:02 Jupiter 1.74187378509392 1.74187302485361 1.74187454533463 2.74205919555981 2.55858297732961 2477710.110713605 2.10051347436054 73.204203327287 8.83399242497283 -78.6423967843718 2615779.66465679 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:01:29 2020-May-20 02:01
2082-Dec-09 01:15 00:03 Jupiter 1.86613555240913 1.86613451580667 1.86613658901329 3.42752476176616 3.29243733140039 2481837.552010587 2.53324507949181 111.590882093137 13.9237519609202 -71.5918130659755 3352607.70913903 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:01:29 2020-May-20 02:01

Alternate Designations
 1986 EN4 = 1982 ON = 1983 YW 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-08 18:49 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin