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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 455 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2226338074573542 1.1283e-08  
a 1.457960681644369 3.8107e-10 AU
q 1.133369343966764 1.6591e-08 AU
i 10.82899937350451 2.2522e-06 deg
node 304.3345369216904 8.7923e-06 deg
peri 178.7956776121438 9.9181e-06 deg
M 231.4013670751829 4.1731e-06 deg
tp 2457230.194711459310
(2015-Jul-26.69471146)
7.4637e-06 JED
period 643.0091381585272
1.76
2.521e-07
6.902e-10
d
yr
n .5598676265021381 2.195e-10 deg/d
Q 1.782552019321975 4.6591e-10 AU
  Orbit Determination Parameters
   # obs. used (total)      5158  
   # delay obs. used      1  
   # Doppler obs. used      3  
   data-arc span      18787 days (51.44 yr)  
   first obs. used      1963-07-15  
   last obs. used      2014-12-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .43712  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-07 23:45:19  

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 0.314929526693361 0.314929013705644 0.314930039681447 5.57861534970782 5.57709853823609 2415380.562246273 0.085711370814764 21.5041586570791 2.39746131622648 -31.1385115154118 4623424.88448096 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
1907-Nov-05 03:31 < 00:01 Earth 0.471485743237792 0.471485606423223 0.47148588005187 4.3944943285251 4.39320815832754 2417884.646197384 0.296105801217219 3.94398042671648 2.7433249413485 -4.53124953168185 6581323.56771706 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
1917-Apr-20 21:19 < 00:01 Earth 0.499257047696656 0.499256945594396 0.499257149799362 4.81677926886452 4.81567116271421 2421339.388376157 0.215997965154254 4.3208382728076 3.20879439343576 13.9314660511295 7016934.10012483 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
1924-Mar-05 22:13 < 00:01 Earth 0.359786223279252 0.359785858592266 0.359786587966402 4.59606489261248 4.59445329051404 2423850.425531804 0.139467504307398 14.3754027811635 2.62342459372642 27.330850502214 3806842.3557927 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
1931-Jan-30 04:07 < 00:01 Earth 0.174073012501651 0.174072743271563 0.174073281732753 5.92081953646026 5.91823374240821 2426371.671222433 0.0332243967683644 13.1481566752499 1.85176501325202 53.4491085785751 5326567.63292403 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
1938-Jan-13 22:04 < 00:01 Earth 0.215005486008612 0.215005172883718 0.215005799134028 6.08405459971126 6.08201735860658 2428912.419539526 0.0317773387589519 13.9060278656567 2.15985754201831 -42.3459896842107 4873806.24110678 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
1944-Nov-27 01:41 < 00:01 Earth 0.403009231519496 0.403008993841901 0.403009469196185 3.62609875977924 3.62427500281788 2431421.569912331 0.232125733166467 7.1182191641989 2.18599796150468 -31.8978310188926 5026121.69617588 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
1961-Apr-04 09:08 < 00:01 Earth 0.442492039164402 0.442491934338299 0.442492143990541 3.70783547646249 3.70621111910642 2437393.880355223 0.164823835932739 4.71427131115192 2.25043262251942 8.3720768603831 4588328.2033345 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
1968-Feb-11 13:46 < 00:01 Earth 0.266271302806985 0.266271108693853 0.266271496920509 6.06688683412912 6.06523722463826 2439898.073412917 0.0274305517009705 8.14555473615068 2.07476761655302 26.726551430194 4624382.21147736 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
1975-Jan-23 07:39 < 00:01 Earth 0.151134257384226 0.151134236629407 0.151134278139017 5.82530962111942 5.82228240598798 2442435.819050589 0.0182420690235727 5.09630942662209 1.89748430998632 -86.2790181366641 5507362.41637853 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
1981-Dec-29 08:05 < 00:01 Earth 0.308489384741611 0.308489255003348 0.308489514480005 5.6652732713492 5.6637484824648 2444967.836507117 0.0284193643591444 6.33308998306554 2.3917313044624 -28.6064749534811 5090664.97848396 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
1988-Nov-06 14:56 < 00:01 Earth 0.467640227064295 0.467640157960106 0.46764029616981 4.30590154885663 4.30457811224607 2447472.122256815 0.0816643490480213 3.78773408674933 2.67277568498773 -5.65822076495794 6688223.57611764 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
2005-Mar-08 22:07 < 00:01 Earth 0.36556725828447 0.365567197922798 0.365567318646223 4.41229498097213 4.41064278391221 2453438.421512531 0.0430342245830735 5.12217030519449 1.88166229169293 4.98952683579792 4023539.86905434 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
2012-Jan-31 11:01 < 00:01 Earth 0.178675897786845 0.17867582748476 0.178675968088699 5.94519771969751 5.94268888685918 2455957.958756509 0.0144560047343063 3.67642477202858 1.78317411094677 39.384859808771 5197457.83269168 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
2019-Jan-15 06:01 < 00:01 Earth 0.208598635191807 0.2085985414259 0.208598728958284 6.04491906335135 6.04280564083864 2458498.750800540 0.0189185491232569 4.55830134354604 2.13407689259292 -37.7111460776401 4983571.49267437 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
2025-Nov-30 02:18 < 00:01 Earth 0.397647393579491 0.3976472977842 0.397647489375926 3.72885340163939 3.72705600638916 2461009.595550688 0.0949717259398548 4.48709578766782 1.68539586045623 -15.798324236508 5065742.25138003 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
2042-Apr-06 19:02 < 00:01 Earth 0.446141835187227 0.446141760531017 0.44614190984502 3.72522625704034 3.72362271542939 2466981.292721319 0.168235633599609 4.38923197944246 2.42299170591107 6.99851014718735 4900685.62706912 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
2049-Feb-12 05:38 < 00:01 Earth 0.272555526867766 0.272555305748477 0.272555747987185 6.05906539470669 6.05745174390377 2469484.734553377 0.0271237352607907 9.9364702779379 2.28167816904398 31.8478467701088 4799874.37969352 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
2056-Jan-24 11:03 < 00:01 Earth 0.149782199175932 0.149782151443026 0.149782246909021 5.82075962784703 5.81770269045095 2472021.960384769 0.0232882279765897 7.96594043548356 1.95803181665161 -80.9185970995701 5233280.6698864 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
2062-Dec-31 08:25 < 00:01 Earth 0.302953313372686 0.302953013852334 0.30295361289362 5.73224832030636 5.73071381007634 2474554.850486813 0.0508441383220277 12.2941244236289 2.33319285147308 -28.6632602326439 4509192.4295256 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
2069-Nov-08 21:29 < 00:01 Earth 0.464728080645861 0.464727975224286 0.464728186066259 4.24541430372433 4.24406359266593 2477059.395097549 0.208506441022922 3.84572407825434 2.64342762131562 -7.48098223970805 6495229.04520302 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
2086-Mar-11 22:55 < 00:01 Earth 0.371310285651815 0.371309907633764 0.371310663670167 4.22586114341319 4.2241627142533 2483026.454757154 0.185483085042077 14.5932256474631 2.84873358827287 30.5983944227057 3704200.09328729 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
2093-Jan-31 15:47 < 00:01 Earth 0.182464147142158 0.182463813465404 0.182464480820096 5.97491617656556 5.97247166639421 2485544.157525119 0.0368144491654706 16.6688160818947 1.94503114809586 52.1873640346363 5257732.70255966 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
2100-Jan-16 11:39 < 00:01 Earth 0.203878867526765 0.203878422607135 0.203879312447904 6.01492058840143 6.01274744339158 2488084.985233926 0.0465513026043581 18.6721435965391 2.10754345379841 -43.1507867468134 4732605.39787338 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
2106-Dec-04 02:22 < 00:01 Earth 0.392290988266759 0.392290568689405 0.392291407845357 3.85303611114635 3.85127291622451 2490597.598770196 0.31051342565167 12.6195300972295 2.09191738413634 -32.4656605757127 5082650.40481255 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
2123-Apr-10 05:51 < 00:01 Earth 0.449703083818908 0.449702875368468 0.449703292265781 3.75372793182339 3.75214917573947 2496568.744043150 0.454739883839929 4.90258559352576 2.87508248459284 21.462261310107 4906759.45887548 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
2130-Feb-14 22:11 < 00:01 Earth 0.278164965913297 0.278164346542687 0.278165585284484 6.03818411111219 6.03659753600716 2499071.424502571 0.0685563383745657 26.0189078175551 2.30544571770694 32.3953895428705 4649344.79507089 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
2137-Jan-25 14:12 < 00:01 Earth 0.149462326528635 0.149462260991009 0.149462392070799 5.81427778511367 5.81121088665738 2501608.091591359 0.0473331887334763 19.4923757718977 1.93938332623653 -84.9386163109969 5309897.39036797 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
2144-Jan-03 10:26 < 00:01 Earth 0.296579963727318 0.296579266437489 0.296580661018157 5.79436084755417 5.79281016418904 2504141.934975581 0.101339535874678 28.0261043934892 2.3525704205362 -30.8814842889342 4507005.35523829 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
2150-Nov-12 07:12 < 00:01 Earth 0.46094447584757 0.460944171827326 0.460944779870506 4.17449808002402 4.17311313822221 2506646.799878478 0.465814658738729 4.67904041200468 2.75951459086829 -22.2176806118093 5820394.30811919 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
2167-Mar-16 05:30 < 00:01 Earth 0.37743421019639 0.377433470414123 0.377434949978344 4.02624523932062 4.02449149827904 2512614.729440733 0.409568366497934 25.81232702341 2.8771728960599 31.9932594884955 3586984.63347357 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
2174-Feb-03 01:31 < 00:01 Earth 0.188400744076382 0.188400060285362 0.188401427872003 6.00554653986669 6.00319115228965 2515130.562864863 0.0688747656716983 32.1536934417878 1.94349188159783 49.4787500576963 5234101.66709133 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
2181-Jan-17 20:55 < 00:01 Earth 0.198010361004897 0.198009574959406 0.198011147053842 5.98983920285684 5.98759226665143 2517671.371299442 0.0797219991137364 33.5847527226544 2.086035413202 -45.6285490289305 4812074.22734583 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45
2187-Dec-06 23:28 < 00:01 Earth 0.387313240362358 0.387312459304707 0.387314021419957 3.98339210267493 3.98166470977217 2520185.477989607 0.503022569895597 23.9076835008537 2.12622834195822 -33.8450676791946 5150773.66358583 T 455 CATAB v2.0c-linF95 2015-Jan-07 23:45:33 2015-Jan-07 23:45

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