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433 Eros (1898 DQ)
Classification: Amor [NEO]          SPK-ID: 2000433
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

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Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 453 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .222633807502651 1.1284e-08  
a 1.457960681669577 3.8108e-10 AU
q 1.133369343920319 1.6591e-08 AU
i 10.82899937604612 2.2522e-06 deg
node 304.3345369121611 8.7927e-06 deg
peri 178.7956777049314 9.919e-06 deg
M 231.4013669876031 4.1735e-06 deg
tp 2457230.194711621696
(2015-Jul-26.69471162)
7.4645e-06 JED
period 643.0091381752036
1.76
2.521e-07
6.902e-10
d
yr
n .5598676264876179 2.195e-10 deg/d
Q 1.782552019418836 4.6592e-10 AU
  Orbit Determination Parameters
   # obs. used (total)      5154  
   # delay obs. used      1  
   # Doppler obs. used      3  
   data-arc span      18773 days (51.40 yr)  
   first obs. used      1963-07-15  
   last obs. used      2014-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4372  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Dec-08 05:15:33  

Additional Information
 Earth MOID = .149152 AU 
 T_jup = 4.583 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.16 mag n/a PDS3 (MPC 17258)  
magnitude slope G 0.46   n/a PDS3 (MPC 17258) Fit
diameter diameter 16.84 km 0.06 Yeomans et al. (2000) Science v.289,pp.2085-2088 sphere having the measured volume of 2503 +/- 25 km^3
extent extent 34.4x11.2x11.2 km n/a Veverka et al. (2000) Science v.289,pp.2088-2097  
GM GM 4.463e-04 km^3/s^2 0.001e-04 Yeomans et al. (2000) Science v.289,pp.2085-2088  
bulk density density 2.67 g/cm^3 0.03 Yeomans et al. (2000) Science v.289,pp.2085-2088 based on a volume of 2503 +/- 25 km^3. Porosity 10-30%.
rotation period rot_per 5.270 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Campa, M. (1938) Mem. Soc. Astron. Ital. 11, 285-301.]
[Beyer, M. (1953) Astron. Nachr. 281, 121-130.]
[Cailliate, C. (1956) Publ. Observ. Lyon 3, fasc. 28.]
[Cristescu, C. (1976) Icarus 28, 39-42.]
[Dunlap, J.L. (1976) Icarus 28, 69-78.]
[Millis, R.L.; Bowell, E.; Thompson, D.T. (1976) Icarus 28, 53-67.]
[Scaltriti, F.; Zappala, V. (1976) Icarus 28, 29-35.]
[Taylor, R.C. (1985) Icarus 61, 3, 490-496.]
[Hicks, M.; Buratti, B.J.; Rabinowitz, D.L.; Genevier, G. (1999) Icarus 141, 411-414.]
[Yeomans, D.K.; Antreasian, P.G.; Bariiot, J.-P.; Chesley, S.R.; et al. (2000) Science 289, 2085-2087.]
[Kaasalainen, M.; Torppa, J.; Muinonen, K. (2001) Icarus 153, 37-51.]
[Miller, J.K.; Konopliv, A.S.; Antreasian, P.G.; Bordi, J.J.; et al. (2002) Icarus 155, 3-17.]
[Wolters, S.D.; Green, S.F.; McBride, N.; Davies, J.K. (2008) Icarus 193, 535-552.]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.25   0.06 Veverka et al. (2000) Science v.289,pp.2088-2097 average
B-V BV .921 mag .021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=48; phase (min.=8.73, mean=34.88, max.=57.19) deg.
U-B UB .531 mag .027 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=45; phase (min.=7.37, mean=34.55, max.=57.19) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
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)

433 Eros (1898 DQ)          Discovered 1898-Aug-13 by Witt, G. at Berlin (548)
Independent discovery earlier the same night by A. Charlois, Nice.
Reference: DISCOVERY.DBLast Updated: 2013-09-05

[ 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
1900-Dec-27 01:30 < 00:01 Earth 0.314929536429064 0.314929023435777 0.314930049422719 5.5786151919869 5.57709838051916 2415380.562243884 0.0857120285983569 21.5043774156822 2.3975462782279 -31.1383590666901 4623245.47703363 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
1907-Nov-05 03:31 < 00:01 Earth 0.471485748412058 0.471485611586516 0.471485885237284 4.3944944295063 4.39320825935242 2417884.646196115 0.296106256635307 3.94464621458063 2.74345282589596 -4.52684394509738 6580181.03602207 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
1917-Apr-20 21:19 < 00:01 Earth 0.499257043692012 0.49925694158265 0.499257145801313 4.81677939156585 4.81567128543488 2421339.388376970 0.215997967638165 4.32137646698903 3.20901858178125 13.9197542542698 7015838.5910008 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
1924-Mar-05 22:13 < 00:01 Earth 0.359786216850058 0.359785852158376 0.359786581541905 4.59606507491844 4.59445347285514 2423850.425529477 0.139469033787289 14.3754788557957 2.62349448510576 27.3306353975192 3806726.24049541 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
1931-Jan-30 04:07 < 00:01 Earth 0.174073007933095 0.174072738698399 0.174073277168805 5.92081948129516 5.91823368715113 2426371.671222755 0.0332249978962797 13.1483057568599 1.85186772645551 53.4490757538481 5326272.36124642 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
1938-Jan-13 22:04 < 00:01 Earth 0.215005491770293 0.215005178641045 0.215005804900061 6.08405465991279 6.08201741888287 2428912.419539456 0.0317774705950629 13.90620859086 2.15988683565298 -42.345922888551 4873734.47013229 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
1944-Nov-27 01:41 < 00:01 Earth 0.403009235878202 0.403008998201083 0.403009473555572 3.62609873356631 3.6242749766115 2431421.569910729 0.232126909747401 7.11850045877893 2.18625091667387 -31.8952298657889 5025348.14153362 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
1961-Apr-04 09:08 < 00:01 Earth 0.442492036855536 0.442491932026731 0.442492141684378 3.70783542739334 3.7062110700073 2437393.880354215 0.164824080500772 4.71459584819942 2.25064234476821 8.36749689675885 4587835.76680669 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
1968-Feb-11 13:46 < 00:01 Earth 0.266271300138954 0.266271106022181 0.266271494255226 6.0668869911537 6.06523738168901 2439898.073411047 0.0274315307068096 8.1456098864546 2.07489960815677 26.726237177037 4624104.18489181 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
1975-Jan-23 07:39 < 00:01 Earth 0.15113425778029 0.151134237025973 0.151134278534765 5.82530963434006 5.82228241922343 2442435.819051216 0.0182425822824743 5.096393245666 1.89754569185245 -86.278802039594 5507183.17614907 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
1981-Dec-29 08:05 < 00:01 Earth 0.308489386475237 0.308489256736371 0.30848951621356 5.66527329004635 5.66374850117555 2444967.836507120 0.0284195102286784 6.33320570343297 2.39179325154598 -28.6054996994853 5090453.6811259 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
1988-Nov-06 14:56 < 00:01 Earth 0.467640227950711 0.467640158840557 0.46764029706089 4.30590143811622 4.30457800147412 2447472.122257974 0.0816663274455481 3.78835477741632 2.67289920738342 -5.65318673376684 6687085.28340616 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
2005-Mar-08 22:07 < 00:01 Earth 0.365567258092725 0.365567197729797 0.365567318455875 4.41229514723969 4.41064295024119 2453438.421510896 0.0430352207630667 5.12219535835988 1.88181039615527 4.98956201940741 4023505.80017094 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
2012-Jan-31 11:01 < 00:01 Earth 0.178675897295592 0.178675826992591 0.178675967598362 5.94519766941046 5.942688836544 2455957.958757505 0.0144569807601371 3.67644466956583 1.78326445684729 39.3837147121066 5197183.63102554 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
2019-Jan-15 06:01 < 00:01 Earth 0.208598636401777 0.208598542636715 0.208598730166429 6.04491901106687 6.04280558854812 2458498.750799628 0.0189188095740422 4.55832734725946 2.13409941994867 -37.7106621776826 4983494.26469423 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
2025-Nov-30 02:18 < 00:01 Earth 0.397647395313743 0.39764729952212 0.397647491106511 3.72885333854574 3.72705594327292 2461009.595548826 0.094974727841968 4.48736944819669 1.68558847573188 -15.7956076381001 5065071.8361995 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
2042-Apr-06 19:02 < 00:01 Earth 0.446141833473435 0.446141758824382 0.446141908121039 3.72522613320262 3.72362259153219 2466981.292719215 0.168242143312503 4.38951191099785 2.4232563382065 6.99237572459707 4900222.5909255 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
2049-Feb-12 05:38 < 00:01 Earth 0.272555524585279 0.272555303465313 0.272555745705373 6.05906532359434 6.05745167275896 2469484.734553845 0.0271243891308314 9.93656375386939 2.28181690862486 31.8478359306877 4799610.92276642 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
2056-Jan-24 11:03 < 00:01 Earth 0.149782199577309 0.149782151844696 0.149782247310106 5.82075962999323 5.81770269260647 2472021.960384540 0.0232889947805783 7.96596940650059 1.95808900742384 -80.9184982773535 5233126.6869196 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
2062-Dec-31 08:25 < 00:01 Earth 0.302953317010868 0.302953017491214 0.302953616530616 5.73224851934262 5.73071400918432 2474554.850488230 0.0508446006349476 12.294224142636 2.33325756948627 -28.6632204248645 4509072.13237604 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
2069-Nov-08 21:29 < 00:01 Earth 0.464728083112042 0.464727977707589 0.464728188515317 4.2454143435595 4.24406363252094 2477059.395097029 0.208512329274681 3.84623313035065 2.64356776612547 -7.47505972403744 6494292.6943676 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
2086-Mar-11 22:55 < 00:01 Earth 0.371310281305577 0.371309903284237 0.37131065932574 4.2258611878062 4.22416275864427 2483026.454756293 0.185484902077728 14.5933878405495 2.84882967741446 30.5987601391127 3704118.07953793 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
2093-Jan-31 15:47 < 00:01 Earth 0.18246414335829 0.182463809681 0.182464477037009 5.97491621129311 5.97247170108527 2485544.157523830 0.0368151198065348 16.6689224108031 1.9451398386027 52.1873564682067 5257440.41755702 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
2100-Jan-16 11:39 < 00:01 Earth 0.203878872098513 0.20387842717656 0.203879317021478 6.01492066797827 6.01274752304592 2488084.985234401 0.04655188777076 18.6722531700356 2.10757135034597 -43.1507655337846 4732541.58903993 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
2106-Dec-04 02:22 < 00:01 Earth 0.392290992619665 0.39229057304312 0.392291412197455 3.85303609048296 3.85127289557123 2490597.598769344 0.310517499284167 12.6196431068177 2.0922328211269 -32.4656766394523 5081932.06261482 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
2123-Apr-10 05:51 < 00:01 Earth 0.449703081219112 0.449702872796723 0.449703289642142 3.75372781948647 3.75214906334615 2496568.744041393 0.454748309333616 4.90273291605015 2.87548056407805 21.4570273845298 4906215.23286445 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
2130-Feb-14 22:11 < 00:01 Earth 0.278164962488591 0.27816434311423 0.278165581863528 6.03818423206037 6.03659765696759 2499071.424501076 0.0685569343872555 26.0191505209599 2.30558275557839 32.3954106374156 4649075.55329863 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
2137-Jan-25 14:12 < 00:01 Earth 0.149462326690122 0.149462261151992 0.149462392232171 5.81427778806015 5.81121088960873 2501608.091591598 0.0473340128080118 19.4925023581043 1.93944401921709 -84.9385985770361 5309731.09628514 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
2144-Jan-03 10:26 < 00:01 Earth 0.296579965038992 0.296579267745707 0.296580662333287 5.79436063778527 5.79280995437085 2504141.934973524 0.101340483554414 28.0263258796698 2.35263243679203 -30.8815113333657 4506891.51531785 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
2150-Nov-12 07:12 < 00:01 Earth 0.460944476345604 0.460944172359617 0.460944780328942 4.17449797722355 4.17311303538912 2506646.799879793 0.465822244309186 4.67929438526226 2.75978681981391 -22.21253418132 5819724.10980265 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
2167-Mar-16 05:30 < 00:01 Earth 0.377434211055078 0.377433471267754 0.377434950842493 4.02624498035645 4.02449123920602 2512614.729443758 0.409572348705176 25.812580396655 2.87726628775625 31.9934667148558 3586890.40563222 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
2174-Feb-03 01:31 < 00:01 Earth 0.188400745314268 0.188400061519228 0.188401429113662 6.00554654587377 6.00319115831457 2515130.562865063 0.0688755526762517 32.153938755766 1.94360446046813 49.4787483893021 5233799.10422014 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
2181-Jan-17 20:55 < 00:01 Earth 0.19801035869923 0.198009572648856 0.198011144753766 5.98983911522439 5.98759217895993 2517671.371298426 0.0797229000274732 33.5849907795379 2.08606468414087 -45.6285461955713 4812006.48714994 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15
2187-Dec-06 23:28 < 00:01 Earth 0.387313237372848 0.38731245631243 0.387314018433853 3.98339227139702 3.98166487855413 2520185.477992647 0.503027959512045 23.9078745894177 2.12653278073666 -33.8451991160843 5150065.65706871 T 453 CATAB v2.0c-linF95 2014-Dec-08 05:15:49 2014-Dec-08 05:15

Alternate Designations
 1898 DQ = 1956 PC 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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