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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 457 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2226338073266597 1.1283e-08  
a 1.457960681631548 3.8107e-10 AU
q 1.133369344147344 1.659e-08 AU
i 10.82899936977314 2.2521e-06 deg
node 304.3345371634829 8.7912e-06 deg
peri 178.7956772083566 9.9165e-06 deg
M 231.4013672075556 4.1724e-06 deg
tp 2457230.194711219844
(2015-Jul-26.69471122)
7.4625e-06 JED
period 643.0091381500451
1.76
2.5209e-07
6.902e-10
d
yr
n .5598676265095234 2.195e-10 deg/d
Q 1.782552019115751 4.659e-10 AU
  Orbit Determination Parameters
   # obs. used (total)      5173  
   # delay obs. used      1  
   # Doppler obs. used      3  
   data-arc span      18788 days (51.44 yr)  
   first obs. used      1963-07-15  
   last obs. used      2014-12-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .43798  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-14 05:15:17  

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 LCDB (Rev. 2015-Feb); Warner et al., 2009 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]
[Koehn, B.W.; Bowell, E.L.G.; Skiff, B.A.; Sanborn, J.J.; et al. (2014) Minor Planet Bul. 41, 286-300.]
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 0.314929522017703 0.314929009040974 0.314930034995294 5.57861552393716 5.57709871249028 2415380.562248332 0.0857100179680484 21.5037869689075 2.39740624133406 -31.1385951176716 4623540.94728237 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
1907-Nov-05 03:31 < 00:01 Earth 0.471485740133373 0.471485603336965 0.471485876929289 4.39449438404982 4.39320821386004 2417884.646196869 0.296104408961648 3.94307330434762 2.74319447615008 -4.54122764831602 6582917.97757016 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
1917-Apr-20 21:19 < 00:01 Earth 0.499257050040115 0.499256947950016 0.499257152130155 4.81677940018099 4.8156712940661 2421339.388377238 0.215997936634762 4.32003617981792 3.20855064981547 13.9497428858844 7018566.1505 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
1924-Mar-05 22:13 < 00:01 Earth 0.359786226167429 0.359785861487792 0.359786590847232 4.59606489187984 4.59445328979408 2423850.425532178 0.139465287527438 14.3752235097032 2.62330906907524 27.3313272752872 3807049.40565058 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
1931-Jan-30 04:07 < 00:01 Earth 0.174073014143356 0.174072744922098 0.174073283365629 5.92081949013502 5.91823369608712 2426371.671223708 0.0332233693399736 13.1478712096104 1.85167842913159 53.4492562856091 5326825.15636006 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
1938-Jan-13 22:04 < 00:01 Earth 0.215005484390969 0.21500517127349 0.215005797508968 6.08405452740718 6.08201728626295 2428912.419538867 0.0317767289493091 13.9057136318831 2.15982091987044 -42.3458849016418 4873880.29753154 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
1944-Nov-27 01:41 < 00:01 Earth 0.403009230299846 0.40300899262386 0.40300946797421 3.62609869981526 3.62427494281821 2431421.569910985 0.232123333648125 7.11786518432594 2.18567555699134 -31.901072958199 5027099.68259424 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
1961-Apr-04 09:08 < 00:01 Earth 0.44249203922353 0.442491934401272 0.442492144046586 3.70783548111502 3.70621112376121 2437393.880354746 0.164823560543809 4.71369002185501 2.25017952310509 8.3794847151301 4589159.80780272 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
1968-Feb-11 13:46 < 00:01 Earth 0.266271302657589 0.266271108551113 0.266271496764457 6.06688675022406 6.06523714070945 2439898.073413716 0.027429322351953 8.14543102891327 2.07464621164234 26.7269261384069 4624656.64223988 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
1975-Jan-23 07:39 < 00:01 Earth 0.151134257662927 0.151134236907998 0.1511342784179 5.82530962937139 5.82228241424982 2442435.819051360 0.0182408279449748 5.09614611520799 1.89743796039279 -86.2787315815008 5507495.4451607 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
1981-Dec-29 08:05 < 00:01 Earth 0.308489385396726 0.30848925566108 0.308489515132501 5.6652733916554 5.66374860280663 2444967.836508153 0.0284189057682664 6.33293953363705 2.39168747018627 -28.6068823095492 5090805.80522909 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
1988-Nov-06 14:56 < 00:01 Earth 0.467640227069286 0.467640157970959 0.467640296167336 4.30590163140244 4.30457819481727 2447472.122255712 0.0816625025505896 3.78690476707806 2.67264266500283 -5.6691502965558 6689791.54145642 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
2005-Mar-08 22:07 < 00:01 Earth 0.365567258245085 0.365567197882905 0.365567318607401 4.41229523746256 4.41064304049854 2453438.421510109 0.0430335636470716 5.12209028622375 1.88141821074052 4.98970565403252 4023634.03816561 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
2012-Jan-31 11:01 < 00:01 Earth 0.17867589820427 0.178675827904898 0.178675968503411 5.94519772869413 5.94268889586546 2455957.958756316 0.0144545434064519 3.67639348569008 1.78308768831441 39.3858313233559 5197716.85590914 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
2019-Jan-15 06:01 < 00:01 Earth 0.20859863460447 0.208598540836998 0.208598728371907 6.04491899677251 6.04280557423056 2458498.750799738 0.0189176335259701 4.55828082925939 2.13403635627804 -37.7112484105604 4983653.28494344 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
2025-Nov-30 02:18 < 00:01 Earth 0.397647392697422 0.397647296895934 0.39764748849965 3.72885334719683 3.72705595191636 2461009.595549910 0.0949691451426416 4.48683569129054 1.68514514855925 -15.8016877375587 5066528.98225934 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
2042-Apr-06 19:02 < 00:01 Earth 0.446141835873589 0.44614176120199 0.446141910543738 3.72522613800344 3.7236225963437 2466981.292718868 0.168224858266817 4.38874728093104 2.42266010265364 7.00844405773043 4901459.64871459 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
2049-Feb-12 05:38 < 00:01 Earth 0.272555528415986 0.272555307296581 0.272555749534934 6.05906521583221 6.0574515649908 2469484.734555286 0.0271230991736352 9.93633889554686 2.28154075465125 31.8475270525839 4800100.28330608 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
2056-Jan-24 11:03 < 00:01 Earth 0.149782199211349 0.149782151479902 0.149782246943158 5.82075962416627 5.81770268676898 2472021.960384880 0.0232867522562912 7.96589513084634 1.95797753003032 -80.9188171169198 5233428.60305344 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
2062-Dec-31 08:25 < 00:01 Earth 0.302953312037828 0.302953012517536 0.302953611558701 5.73224865830217 5.73071414815589 2474554.850490052 0.0508434159577533 12.2939907280025 2.33314903573239 -28.6632871945936 4509276.80392655 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
2069-Nov-08 21:29 < 00:01 Earth 0.464728079453738 0.464727974010086 0.464728184898149 4.24541427222928 4.24406356115739 2477059.395097714 0.208498506342031 3.84506749516094 2.64325404179112 -7.49255668844155 6496499.73969656 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
2086-Mar-11 22:55 < 00:01 Earth 0.371310285552916 0.371309907538379 0.371310663568668 4.22586123907551 4.22416280995363 2483026.454756282 0.185480031372736 14.5929732338186 2.84853342537847 30.5977829886381 3704383.14055551 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
2093-Jan-31 15:47 < 00:01 Earth 0.182464147192958 0.182463813517892 0.182464480869847 5.97491617113777 5.97247166096488 2485544.157525114 0.0368134453317361 16.6686522048234 1.94493161042523 52.1872657979459 5257993.16139846 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
2100-Jan-16 11:39 < 00:01 Earth 0.203878868068571 0.203878423152739 0.203879312985912 6.01492063758085 6.01274749259455 2488084.985234647 0.0465501668910602 18.6719642862385 2.10750730914829 -43.1508652076013 4732692.82756375 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
2106-Dec-04 02:22 < 00:01 Earth 0.39229098887884 0.39229056929886 0.392291408459003 3.85303611491008 3.85127291999272 2490597.598770588 0.310507903866737 12.6193851458722 2.09154766887535 -32.465474506873 5083471.75576051 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
2123-Apr-10 05:51 < 00:01 Earth 0.449703082562731 0.44970287406882 0.449703291055677 3.75372794575326 3.75214918967078 2496568.744042810 0.454725656804661 4.90234150727783 2.87452303058214 21.471272047976 4907623.48917004 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
2130-Feb-14 22:11 < 00:01 Earth 0.278164963381419 0.278164344016504 0.278165582747068 6.03818418777399 6.03659761267466 2499071.424501517 0.0685554780800703 26.0185191973832 2.30531724656746 32.3952630537385 4649584.51341298 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
2137-Jan-25 14:12 < 00:01 Earth 0.149462327081421 0.149462261545261 0.149462392621264 5.81427778194229 5.81121088349568 2501608.091590934 0.0473317438371772 19.4921622118567 1.93932968534927 -84.9387072002767 5310045.00899965 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
2144-Jan-03 10:26 < 00:01 Earth 0.296579967395853 0.296579270112589 0.296580664680127 5.79436059104792 5.79280990763331 2504141.934972859 0.101338047965271 28.0257358582057 2.35252704973111 -30.8814757822413 4507086.79325706 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
2150-Nov-12 07:12 < 00:01 Earth 0.460944478322918 0.460944174248495 0.460944782394695 4.17449804366866 4.17311310186223 2506646.799878379 0.465803337404999 4.67875945449216 2.75910681772629 -22.2257684716267 5821334.67223826 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
2167-Mar-16 05:30 < 00:01 Earth 0.37743420385628 0.377433464083048 0.377434943630257 4.02624539020359 4.0244916491983 2512614.729438592 0.409561455187979 25.8119100743575 2.87696375439363 31.9928967313454 3587204.36661591 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
2174-Feb-03 01:31 < 00:01 Earth 0.188400738369725 0.188400054585261 0.188401422159192 6.0055465060616 6.00319111839994 2515130.562864254 0.0688735160399189 32.1532870667988 1.94339063825243 49.4786971538032 5234369.50467149 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
2181-Jan-17 20:55 < 00:01 Earth 0.198010368076306 0.198009582040297 0.198011154115966 5.98983916632997 5.98759223019111 2517671.371297729 0.0797204171499168 33.5843428066261 2.08599956857532 -45.6285910357992 4812160.40392727 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15
2187-Dec-06 23:28 < 00:01 Earth 0.387313247483046 0.387312466431344 0.387314028535336 3.98339208602168 3.98166469314347 2520185.477988977 0.503014285539985 23.9073794296666 2.12589431288209 -33.8448458416627 5151541.16362533 T 457 CATAB v2.0c-linF95 2015-Feb-14 05:15:35 2015-Feb-14 05:15

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