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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 442 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2226333870714886 1.129e-08  
a 1.45796504930896 3.7893e-10 AU
q 1.133373352149456 1.6599e-08 AU
i 10.82897570723645 2.2531e-06 deg
node 304.335252174989 8.8088e-06 deg
peri 178.7833338559107 9.9421e-06 deg
M 119.4458904191775 4.1797e-06 deg
tp 2456587.152377262311
(2013-Oct-21.65237726)
7.4573e-06 JED
period 643.012027588657
1.76
2.5068e-07
6.863e-10
d
yr
n .5598651106885618 2.1827e-10 deg/d
Q 1.782556746468464 4.6329e-10 AU
  Orbit Determination Parameters
   # obs. used (total)      5121  
   # delay obs. used      1  
   # Doppler obs. used      3  
   data-arc span      18644 days (51.04 yr)  
   first obs. used      1963-07-15  
   last obs. used      2014-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .43604  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-01 06:16:19  

Additional Information
 Earth MOID = .148916 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. 2013-Sep-12) 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 0.314929531903072 0.314929018680687 0.31493004512632 5.57861532171316 5.57709851025891 2415380.562245633 0.0857430538169738 21.5117087391152 2.39849571603856 -31.138819566707 4621482.53609817 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
1907-Nov-05 03:31 < 00:01 Earth 0.471485744884663 0.471485607678051 0.471485882090781 4.3944944187826 4.39320824861596 2417884.646195984 0.296150323897998 3.95743226022174 2.74574001986367 -4.35096626270591 6557460.68508008 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
1917-Apr-20 21:19 < 00:01 Earth 0.49925704773697 0.499256945367741 0.499257150105518 4.81677934090971 4.81567123477606 2421339.388376351 0.216000447499668 4.3342231065703 3.21277534467528 13.6603187523492 6990563.8544963 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
1924-Mar-05 22:13 < 00:01 Earth 0.359786222860636 0.35978585803911 0.359786587682326 4.59606508905465 4.59445348702324 2423850.425530534 0.139510137722159 14.3799266608359 2.62621896941324 27.3186486479202 3801761.25161074 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
1931-Jan-30 04:07 < 00:01 Earth 0.174073013283615 0.174072743868294 0.174073282700388 5.9208195360371 5.91823374199648 2426371.671223265 0.0332390940590757 13.1542253979294 1.85267198163305 53.4437823122559 5323605.68634776 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
1938-Jan-13 22:04 < 00:01 Earth 0.215005484559122 0.215005171277223 0.21500579784201 6.0840545985852 6.08201735746641 2428912.419539670 0.0317930368676152 13.9123258469884 2.16133066532265 -42.3496887738033 4870843.1950042 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
1944-Nov-27 01:41 < 00:01 Earth 0.40300922973114 0.403008991922812 0.403009467539002 3.62609873704031 3.62427498005942 2431421.569913825 0.232188165983366 7.12284011857754 2.18928006959017 -31.8634640731174 5015901.58348242 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
1961-Apr-04 09:08 < 00:01 Earth 0.442492041874798 0.442491936949303 0.442492146799095 3.70783545066425 3.70621109330683 2437393.880353419 0.164830801299121 4.72527417162395 2.25390428938511 8.26743619376528 4574167.53947518 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
1968-Feb-11 13:46 < 00:01 Earth 0.266271305520607 0.266271111283516 0.266271499756989 6.06688681730902 6.06523720783039 2439898.073413840 0.0274448547498043 8.14861880022583 2.07599494835761 26.7164890962942 4620650.65357935 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
1975-Jan-23 07:39 < 00:01 Earth 0.151134257487517 0.151134236732159 0.15113427824292 5.82530966487713 5.8222824497705 2442435.819052356 0.0182648076782222 5.09952201336514 1.89837279798905 -86.2945763098319 5504867.90137493 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
1981-Dec-29 08:05 < 00:01 Earth 0.308489384379676 0.308489254546627 0.308489514212598 5.66527347289711 5.66374868406518 2444967.836509081 0.0284373591860577 6.33540559676001 2.39285502543645 -28.6082824924222 5088616.95863589 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
1988-Nov-06 14:56 < 00:01 Earth 0.467640226668214 0.467640157420668 0.467640295915788 4.30590165041045 4.30457821382999 2447472.122255357 0.0816762011400283 3.79958878976445 2.67527142594285 -5.46924962303291 6665502.32260236 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
2005-Mar-08 22:07 < 00:01 Earth 0.365567258193603 0.36556719786727 0.365567318520241 4.41229510655542 4.41064290954213 2453438.421511972 0.0430446608364405 5.12601239691629 1.88626345837918 4.98388320613789 4019953.66207634 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
2012-Jan-31 11:01 < 00:01 Earth 0.178675898058142 0.178675827711815 0.178675968404468 5.94519769656692 5.94268886372263 2455957.958757615 0.0144735141410424 3.67725722670373 1.78417473198698 39.3682420474452 5193952.79576905 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
2019-Jan-15 06:01 < 00:01 Earth 0.208598635647759 0.208598541887157 0.208598729408557 6.04491911193794 6.04280568944683 2458498.750801057 0.018944441079727 4.55844477102196 2.13565033989017 -37.7077768813185 4980627.48173299 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
2025-Nov-30 02:18 < 00:01 Earth 0.397647393901097 0.397647298152173 0.397647489650105 3.72885338774016 3.72705599248468 2461009.595551708 0.0949954155360012 4.48870948485934 1.68835368438261 -15.7705305982175 5058681.83933001 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
2042-Apr-06 19:02 < 00:01 Earth 0.446141836447551 0.446141762020172 0.446141910873476 3.72522629407847 3.723622752488 2466981.292720841 0.16843992737034 4.3981117831654 2.4280043697166 6.85677380015679 4887585.13769867 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
2049-Feb-12 05:38 < 00:01 Earth 0.272555529113967 0.272555308008163 0.27255575022026 6.05906528209928 6.05745163127966 2469484.734555153 0.0271292410300653 9.93943470559824 2.28354943820882 31.8566032101339 4797225.84728088 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
2056-Jan-24 11:03 < 00:01 Earth 0.149782199250399 0.149782151472571 0.14978224702841 5.82075965196157 5.81770271457968 2472021.960385089 0.0233177099662144 7.96700301260695 1.95924424297815 -80.9133653179407 5229974.46377441 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
2062-Dec-31 08:25 < 00:01 Earth 0.30295331063541 0.302953011091511 0.302953610178917 5.73224848870308 5.73071397850428 2474554.850488766 0.0508638137285344 12.2967255647092 2.33428600328804 -28.661805852497 4507025.39242625 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
2069-Nov-08 21:29 < 00:01 Earth 0.464728078592493 0.464727973546067 0.464728183638938 4.24541433161274 4.24406362055724 2477059.395096902 0.208629324477829 3.85455708639332 2.64669879711738 -7.29083249110458 6477569.95516057 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
2086-Mar-11 22:55 < 00:01 Earth 0.371310288528968 0.371309910480262 0.371310666577977 4.22586099459479 4.22416256538822 2483026.454759740 0.185548796542519 14.5991293286081 2.85345524225653 30.6077131614635 3699408.87512438 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
2093-Jan-31 15:47 < 00:01 Earth 0.182464150319765 0.182463816620847 0.182464484020111 5.97491622631998 5.97247171621157 2485544.157525383 0.0368317495400149 16.6723509658396 1.94626436194181 52.190758166573 5254655.87604973 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
2100-Jan-16 11:39 < 00:01 Earth 0.203878864311204 0.203878419302217 0.203879309321701 6.014920635604 6.01274749057693 2488084.985235046 0.0465788068219057 18.6760684912687 2.10896092113966 -43.1484393227041 4729254.50659774 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
2106-Dec-04 02:22 < 00:01 Earth 0.392290985124479 0.392290565515193 0.39229140473501 3.85303619163279 3.85127299673368 2490597.598773081 0.310609828903595 12.6221779923288 2.09541602498547 -32.472065787249 5075448.92181725 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
2123-Apr-10 05:51 < 00:01 Earth 0.449703087239091 0.449702879525988 0.449703294952832 3.75372808162744 3.75214932561855 2496568.744044617 0.455020329494185 4.90727141398059 2.88367970914269 21.324804923088 4892956.2005855 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
2130-Feb-14 22:11 < 00:01 Earth 0.278164970208757 0.278164350723154 0.278165589694938 6.03818399395419 6.03659741884286 2499071.424504580 0.0685728692970407 26.0271167147663 2.30712913705169 32.3989056029226 4646426.76963276 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
2137-Jan-25 14:12 < 00:01 Earth 0.149462326645802 0.149462261049675 0.149462392244847 5.81427780879312 5.81121091035173 2501608.091591200 0.0473634108448787 19.4970256803815 1.94049372973588 -84.9359352558489 5306837.28766351 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
2144-Jan-03 10:26 < 00:01 Earth 0.2965799597579 0.296579262319473 0.296580657196308 5.79436079086177 5.79281010746071 2504141.934975618 0.101373782446612 28.0338094550796 2.35373534597461 -30.880942840262 4504724.45825052 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
2150-Nov-12 07:12 < 00:01 Earth 0.460944473098008 0.460944169847879 0.460944776345471 4.1744978236173 4.17311288172213 2506646.799881230 0.466017142433629 4.68213192393927 2.7664773237114 -22.1077771697621 5807315.37270696 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
2167-Mar-16 05:30 < 00:01 Earth 0.377434214690884 0.377433474748657 0.377434954634918 4.02624507828226 4.0244913371914 2512614.729443835 0.409714032213611 25.8214824434616 2.88208168443089 31.9993536647813 3581608.51479797 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
2174-Feb-03 01:31 < 00:01 Earth 0.188400748944659 0.188400065025568 0.188401432868355 6.00554652612938 6.00319113860783 2515130.562866473 0.0688997343929767 32.1622714444082 1.94466809952463 49.4806785013609 5231090.32850723 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
2181-Jan-17 20:55 < 00:01 Earth 0.198010356225195 0.198009569975698 0.19801114247866 5.98983918205558 5.98759224578812 2517671.371299745 0.0797580520311753 33.5935581912767 2.08741105632675 -45.627195888481 4808799.54657592 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16
2187-Dec-06 23:28 < 00:01 Earth 0.38731323575365 0.387312454534294 0.387314016973595 3.98339212434199 3.98166473142807 2520185.477991217 0.503181312937192 23.9141358207743 2.1290641483989 -33.8490942458802 5144533.61806848 T 442 CATAB v2.0c-linF95 2014-Aug-01 06:16:34 2014-Aug-01 06:16

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