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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 452 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2226338074911436 1.1284e-08  
a 1.457960681655676 3.8108e-10 AU
q 1.13336934392629 1.6591e-08 AU
i 10.82899935786473 2.2523e-06 deg
node 304.3345370004248 8.7929e-06 deg
peri 178.7956775609487 9.9194e-06 deg
M 231.4013670374834 4.1738e-06 deg
tp 2457230.194711529318
(2015-Jul-26.69471153)
7.4649e-06 JED
period 643.0091381660069
1.76
2.521e-07
6.902e-10
d
yr
n .5598676264956255 2.1951e-10 deg/d
Q 1.782552019385062 4.6592e-10 AU
  Orbit Determination Parameters
   # obs. used (total)      5150  
   # delay obs. used      1  
   # Doppler obs. used      3  
   data-arc span      18751 days (51.34 yr)  
   first obs. used      1963-07-15  
   last obs. used      2014-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .43689  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-16 04:46:15  

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 0.314929526633761 0.314929013638112 0.314930039630272 5.57861520222854 5.57709839071641 2415380.562245104 0.0857123505247931 21.5044879726068 2.39758537323083 -31.1382845231694 4623162.14176285 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
1907-Nov-05 03:31 < 00:01 Earth 0.471485743070794 0.471485606240334 0.47148587990197 4.39449448922718 4.39320831907621 2417884.646195885 0.296106446716345 3.94499013968372 2.743514611432 -4.52439195216221 6579589.33314258 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
1917-Apr-20 21:19 < 00:01 Earth 0.499257047689994 0.499256945577123 0.499257149802492 4.81677952475166 4.81567141866021 2421339.388378346 0.215997951224338 4.32165551338051 3.20912965157052 13.9135359591593 7015268.78015528 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
1924-Mar-05 22:13 < 00:01 Earth 0.359786223041472 0.359785858347378 0.359786587735731 4.59606482832633 4.59445322620427 2423850.425532412 0.139469827878456 14.3755153717909 2.62352864674687 27.3305278545509 3806669.10272914 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
1931-Jan-30 04:07 < 00:01 Earth 0.174073012012814 0.174072742775955 0.174073281250249 5.92081952842982 5.918233734367 2426371.671222388 0.0332253077574197 13.1483831280269 1.85191800989438 53.4490551880621 5326127.74799976 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
1938-Jan-13 22:04 < 00:01 Earth 0.215005486476476 0.215005173344923 0.21500579960826 6.08405453475209 6.08201729363008 2428912.419538720 0.0317775410952774 13.9063011012988 2.15989885339764 -42.3458960475832 4873704.6282562 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
1944-Nov-27 01:41 < 00:01 Earth 0.40300923183421 0.403008994157316 0.403009469509482 3.62609873224306 3.62427497526927 2431421.569911525 0.23212749346925 7.11864379394565 2.18638061038179 -31.893892788399 5024951.31123575 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
1961-Apr-04 09:08 < 00:01 Earth 0.442492038755692 0.442491933926032 0.442492143586149 3.70783544736959 3.70621108999927 2437393.880354620 0.164824192547901 4.71476386915683 2.25074916807899 8.36505819857645 4587578.82143922 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
1968-Feb-11 13:46 < 00:01 Earth 0.26627130184281 0.2662711077243 0.266271495961923 6.06688704738119 6.06523743794235 2439898.073410614 0.0274320299198584 8.14563800162802 2.07496509795117 26.726086194551 4623966.79426563 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
1975-Jan-23 07:39 < 00:01 Earth 0.151134257568575 0.151134236814378 0.151134278322817 5.8253096305791 5.82228241545627 2442435.819051785 0.0182428542033022 5.09643751815902 1.8975742853687 -86.2786997547178 5507099.65075559 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
1981-Dec-29 08:05 < 00:01 Earth 0.30848938583733 0.308489256098443 0.308489515575675 5.66527317372814 5.66374838482288 2444967.836506239 0.0284195679192707 6.33326405991313 2.39182106989702 -28.6050329454023 5090354.30053621 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
1988-Nov-06 14:56 < 00:01 Earth 0.467640227462234 0.467640158349442 0.46764029657635 4.30590156253087 4.30457812592563 2447472.122256640 0.0816672976550009 3.78867504431254 2.67295915281685 -5.65040566767033 6686496.40384917 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
2005-Mar-08 22:07 < 00:01 Earth 0.365567258091612 0.365567197727956 0.365567318455318 4.41229515600508 4.41064295900985 2453438.421510807 0.0430356853847571 5.12220303847149 1.88188764146522 4.98958606592899 4023492.18948712 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
2012-Jan-31 11:01 < 00:01 Earth 0.178675897415988 0.178675827112427 0.178675967719318 5.94519770940949 5.94268887656161 2455957.958756541 0.0144574855416544 3.6764538417022 1.78330929844824 39.3831665976532 5197049.12870541 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
2019-Jan-15 06:01 < 00:01 Earth 0.208598635861987 0.20859854209781 0.208598729625755 6.0449190722211 6.04280564971828 2458498.750800710 0.0189189415467762 4.55833989033822 2.13410869693428 -37.7104454356339 4983460.82844807 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
2025-Nov-30 02:18 < 00:01 Earth 0.397647394441414 0.397647298651218 0.397647490232348 3.72885333543358 3.72705594015531 2461009.595549115 0.094976194997713 4.48750695599812 1.68568684706926 -15.7942041602617 5064729.59630738 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
2042-Apr-06 19:02 < 00:01 Earth 0.446141834050862 0.446141759406583 0.446141908693692 3.72522619854501 3.72362265690478 2466981.292720254 0.168245485629296 4.38965675078269 2.42339052834668 6.98910629509209 4899981.35018726 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
2049-Feb-12 05:38 < 00:01 Earth 0.272555525203371 0.272555304083062 0.272555746323809 6.05906519904705 6.05745154818215 2469484.734555064 0.0271247177662624 9.93660943550751 2.28188548366409 31.8478434114108 4799482.16539238 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
2056-Jan-24 11:03 < 00:01 Earth 0.149782199500306 0.149782151767373 0.149782247233134 5.82075962045619 5.81770268306285 2472021.960384605 0.0232893939868186 7.96598346991572 1.95811579701393 -80.9184474312371 5233054.48089457 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
2062-Dec-31 08:25 < 00:01 Earth 0.302953316570535 0.302953017051255 0.30295361608961 5.73224843718725 5.73071392700473 2474554.850487612 0.0508448254864917 12.2942731516723 2.33328665814361 -28.6632045397732 4509018.01045162 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
2069-Nov-08 21:29 < 00:01 Earth 0.464728083045086 0.464727977649118 0.464728188439877 4.24541443034578 4.24406371933465 2477059.395095963 0.208515310617267 3.84649543433822 2.64363678486792 -7.47183581101014 6493807.90274687 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
2086-Mar-11 22:55 < 00:01 Earth 0.371310279131078 0.371309901108091 0.371310657153454 4.22586114193025 4.22416271273992 2483026.454756573 0.185485822524255 14.5934678004725 2.8488780749296 30.5989563742067 3704077.90604396 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
2093-Jan-31 15:47 < 00:01 Earth 0.182464141243038 0.182463807565157 0.182464474922348 5.97491614763671 5.97247163737447 2485544.157524392 0.0368154662172546 16.6689749122983 1.94519319433683 52.1873557726297 5257297.09503374 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
2100-Jan-16 11:39 < 00:01 Earth 0.203878875340719 0.203878430418347 0.203879320264601 6.01492065137821 6.01274750647443 2488084.985233764 0.0465521872082413 18.6723076814091 2.10758295290753 -43.1507546627196 4732514.84324942 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
2106-Dec-04 02:22 < 00:01 Earth 0.392290996036938 0.392290576462562 0.392291415611499 3.85303603374819 3.85127283882586 2490597.598768133 0.310519554776588 12.6196988234823 2.09239357809161 -32.4656877397599 5081566.43661957 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
2123-Apr-10 05:51 < 00:01 Earth 0.449703078008696 0.449702869597947 0.449703286420086 3.7537278862517 3.7521491301282 2496568.744041997 0.454752593673737 4.90280779635509 2.87568498458979 21.4542133213592 4905930.93058046 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
2130-Feb-14 22:11 < 00:01 Earth 0.278164957394325 0.278164338018079 0.278165576771146 6.03818424893903 6.03659767382162 2499071.424500241 0.068557234994634 26.0192726639573 2.30565012339298 32.3954247884604 4648943.58455531 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
2137-Jan-25 14:12 < 00:01 Earth 0.149462327195174 0.149462261656733 0.149462392736769 5.81427778006122 5.81121088161595 2501608.091591558 0.0473344387426922 19.4925662964448 1.93947250997025 -84.9385859529067 5309653.01087492 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
2144-Jan-03 10:26 < 00:01 Earth 0.296579970616863 0.29657927332183 0.296580667912906 5.79436064751844 5.79280996413579 2504141.934973072 0.101340953711624 28.0264392927668 2.35266029127376 -30.8815250012295 4506840.67738474 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
2150-Nov-12 07:12 < 00:01 Earth 0.460944479910049 0.460944175949185 0.460944783875647 4.1744980937046 4.17311315191954 2506646.799877954 0.465826086236794 4.67942325663815 2.75992629694476 -22.2097727091362 5819375.55713645 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
2167-Mar-16 05:30 < 00:01 Earth 0.377434203893454 0.377433464103087 0.377434943683913 4.02624538481237 4.02449164380491 2512614.729438519 0.409574220348518 25.8127156455834 2.87731393204014 31.9935782037727 3586843.21605063 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
2174-Feb-03 01:31 < 00:01 Earth 0.188400738967896 0.188400055171127 0.188401422769266 6.00554646111513 6.00319107344332 2515130.562865118 0.0688759565207032 32.1540611811623 1.94365975270892 49.4787518102561 5233650.59143237 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
2181-Jan-17 20:55 < 00:01 Earth 0.19801036575073 0.198009579697782 0.198011151807841 5.98983920106927 5.98759226491705 2517671.371298792 0.0797233497265273 33.5851117081423 2.08607709785807 -45.6285415032119 4811977.73588946 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46
2187-Dec-06 23:28 < 00:01 Earth 0.38731324386638 0.387312462804245 0.387314024928463 3.98339209109895 3.98166469820681 2520185.477989236 0.503030769791273 23.9079648001445 2.12668707326904 -33.845267052033 5149706.90966366 T 452 CATAB v2.0c-linF95 2014-Nov-16 04:46:30 2014-Nov-16 04:46

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