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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 444 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2226338073929268 1.1287e-08  
a 1.457960681651607 3.8114e-10 AU
q 1.133369344066323 1.6597e-08 AU
i 10.8289993905551 2.2524e-06 deg
node 304.3345376059151 8.8001e-06 deg
peri 178.7956768329857 9.9304e-06 deg
M 231.4013671529605 4.1791e-06 deg
tp 2457230.194711322099
(2015-Jul-26.69471132)
7.4743e-06 JED
period 643.0091381633155
1.76
2.5214e-07
6.903e-10
d
yr
n .559867626497969 2.1954e-10 deg/d
Q 1.782552019236891 4.6599e-10 AU
  Orbit Determination Parameters
   # obs. used (total)      5123  
   # 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      .43603  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 13:52:28  

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 0.314929524825086 0.314929011737907 0.314930037912634 5.57861529585352 5.57709848435814 2415380.562246259 0.0857233078392627 21.5074343642116 2.39766647242189 -31.1382384164444 4622984.1924298 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
1907-Nov-05 03:31 < 00:01 Earth 0.471485741706694 0.471485604721758 0.471485878691884 4.39449431683343 4.39320814662826 2417884.646197385 0.296120296357826 3.95154484042765 2.7442302788607 -4.43305025964439 6567923.49725275 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
1917-Apr-20 21:19 < 00:01 Earth 0.499257049438179 0.499256947224989 0.49925715165201 4.81677942729511 4.81567132118511 2421339.388377440 0.215998177734793 4.32784887300698 3.21059902510267 13.7670294645715 7002666.70684319 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
1924-Mar-05 22:13 < 00:01 Earth 0.359786225203643 0.359785860448878 0.359786589958863 4.59606502043697 4.59445341839199 2423850.425531229 0.139486055154145 14.376982034575 2.62436853847995 27.3266950343036 3805119.54959811 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
1931-Jan-30 04:07 < 00:01 Earth 0.174073013886913 0.17407274457243 0.17407328320241 5.92081952653214 5.91823373249633 2426371.671223303 0.0332320449948979 13.1507772358731 1.85228947537283 53.4473266499058 5324945.19587487 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
1938-Jan-13 22:04 < 00:01 Earth 0.215005484106188 0.215005170910476 0.215005797302421 6.08405467455938 6.08201743346174 2428912.419540954 0.0317823222691877 13.9088364189268 2.16006502679399 -42.3473457005518 4873443.59181223 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
1944-Nov-27 01:41 < 00:01 Earth 0.403009229706328 0.403008991991516 0.403009467419518 3.62609868661798 3.6242749296116 2431421.569911422 0.23214908319592 7.12081677430563 2.18827171488278 -31.8745369906406 5019174.33740649 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
1961-Apr-04 09:08 < 00:01 Earth 0.442492040236904 0.442491935375694 0.44249214509815 3.7078355139715 3.70621115663582 2437393.880355210 0.164825604887853 4.71924636252081 2.2523936589129 8.30793864037484 4581236.48696614 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
1968-Feb-11 13:46 < 00:01 Earth 0.266271303290337 0.266271109113892 0.266271497466832 6.06688706180833 6.06523745238239 2439898.073410959 0.0274391758324623 8.146660998254 2.07557103115336 26.7231921562237 4622428.49021095 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
1975-Jan-23 07:39 < 00:01 Earth 0.151134257518683 0.151134236762866 0.151134278274543 5.82530964739022 5.82228243227513 2442435.819052148 0.0182521878045965 5.09778329315036 1.89771568325608 -86.2832872948106 5506713.40406085 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
1981-Dec-29 08:05 < 00:01 Earth 0.308489385313158 0.308489255541869 0.30848951508525 5.66527321566446 5.66374842676789 2444967.836506805 0.0284227621742347 6.33422297470042 2.39190657702993 -28.6060789600717 5090080.18746438 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
1988-Nov-06 14:56 < 00:01 Earth 0.467640227145398 0.467640157975848 0.467640296315166 4.30590165217576 4.30457821559718 2447472.122255511 0.0816752638064747 3.79454772938084 2.67372400279609 -5.55275972366821 6675200.95514165 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
2005-Mar-08 22:07 < 00:01 Earth 0.365567258133929 0.365567197783155 0.365567318484923 4.41229531693309 4.41064311999834 2453438.421509698 0.0430368450592812 5.12272628794124 1.88389202326076 4.98884488506642 4022847.80926778 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
2012-Jan-31 11:01 < 00:01 Earth 0.178675897851108 0.178675827519869 0.178675968182491 5.94519773467032 5.94268890183921 2455957.958756561 0.0144668857667753 3.67666358825007 1.78376180044991 39.3783207487731 5195692.02911468 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
2019-Jan-15 06:01 < 00:01 Earth 0.208598635493456 0.208598541732474 0.208598729255008 6.04491904674411 6.04280562422864 2458498.750800369 0.0189269806161819 4.55840135065172 2.13435524261442 -37.7119303010474 4983117.1119088 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
2025-Nov-30 02:18 < 00:01 Earth 0.397647394155345 0.397647298401045 0.397647489908666 3.72885333966964 3.72705594439212 2461009.595550212 0.0949866564046007 4.48863752992259 1.68723051433071 -15.7754256029399 5060420.64938157 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
2042-Apr-06 19:02 < 00:01 Earth 0.446141835559355 0.446141761027435 0.446141910091342 3.72522620131933 3.72362265968573 2466981.292719713 0.168330439214426 4.39335696163966 2.4256251916991 6.9119182109638 4894089.18685599 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
2049-Feb-12 05:38 < 00:01 Earth 0.27255552749776 0.272555306378361 0.272555748616704 6.05906533700182 6.05745168618725 2469484.734554315 0.0271279632484602 9.93758534920319 2.28265948846781 31.8519969063 4798460.83122014 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
2056-Jan-24 11:03 < 00:01 Earth 0.149782199208319 0.149782151456713 0.149782246960109 5.82075963481339 5.81770269742163 2472021.960384840 0.0233015651072069 7.96634460922839 1.95837463653837 -80.9163766158949 5232335.14875739 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
2062-Dec-31 08:25 < 00:01 Earth 0.302953313729707 0.30295301420705 0.302953613252946 5.73224846851932 5.73071395833079 2474554.850488328 0.0508502597606446 12.2952607083017 2.33335572225235 -28.6631904590786 4508858.15404261 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
2069-Nov-08 21:29 < 00:01 Earth 0.464728080940376 0.464727975724645 0.464728186156867 4.24541441165189 4.24406370062869 2477059.395096040 0.20857023922813 3.85099999854576 2.64476559701078 -7.37304671125355 6484806.65039285 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
2086-Mar-11 22:55 < 00:01 Earth 0.371310283987803 0.371309905949051 0.371310662026293 4.22586085626668 4.22416242698372 2483026.454760533 0.185510073703681 14.5954818717747 2.85044956079438 30.6041728933513 3702680.82450031 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
2093-Jan-31 15:47 < 00:01 Earth 0.182464145681585 0.182463811993634 0.182464479370964 5.97491623499069 5.97247172482368 2485544.157524124 0.0368231976261923 16.6702478901577 1.94569080486149 52.1886881886226 5256053.26481503 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
2100-Jan-16 11:39 < 00:01 Earth 0.203878869846912 0.203878424892623 0.203879314802711 6.01492061478375 6.01274746980817 2488084.985234030 0.0465620729692222 18.673745262977 2.10775742257258 -43.1500210823351 4732060.41711947 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
2106-Dec-04 02:22 < 00:01 Earth 0.392290991024622 0.39229057145147 0.392291410597301 3.85303605144581 3.85127285650904 2490597.598769666 0.310558268925192 12.6207453598599 2.09445098738852 -32.4679298925494 5077150.27068967 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
2123-Apr-10 05:51 < 00:01 Earth 0.449703081091177 0.449702873020858 0.449703289164743 3.75372791240636 3.75214915630469 2496568.744042044 0.454866209114487 4.90461767521057 2.87973391212655 21.3828091857024 4899397.77504899 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
2130-Feb-14 22:11 < 00:01 Earth 0.278164959959699 0.278164340539362 0.278165579380612 6.03818409286923 6.03659751772543 2499071.424502313 0.0685638171567731 26.0223584901459 2.30632325939481 32.3968943049985 4647785.02519433 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
2137-Jan-25 14:12 < 00:01 Earth 0.149462327059205 0.149462261496119 0.149462392626829 5.81427779403727 5.81121089559659 2501608.091590524 0.0473466590478579 19.4942903961383 1.93970543300254 -84.9375810077141 5309007.26632041 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
2144-Jan-03 10:26 < 00:01 Earth 0.296579970710773 0.296579273362663 0.296580668059893 5.79436061289993 5.7928099295085 2504141.934972839 0.101353057133858 28.0293834482379 2.35273245601099 -30.8814936720833 4506691.92269055 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
2150-Nov-12 07:12 < 00:01 Earth 0.460944480467633 0.460944176883959 0.460944784048649 4.17449810998289 4.17311316820491 2506646.799877340 0.465910428990463 4.68109514372519 2.76295990853454 -22.147781151817 5812654.40040852 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
2167-Mar-16 05:30 < 00:01 Earth 0.377434202941671 0.377433463087178 0.377434942797314 4.02624543926263 4.02449169827447 2512614.729438374 0.409629829664773 25.8160914472546 2.87895858748117 31.9965686536743 3585129.83381617 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
2174-Feb-03 01:31 < 00:01 Earth 0.188400737540664 0.188400053694792 0.188401421391139 6.00554656038585 6.00319117273513 2515130.562863668 0.0688861467634928 32.157284830747 1.94415043034653 49.4794802278277 5232388.37044978 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
2181-Jan-17 20:55 < 00:01 Earth 0.198010368053672 0.19800958192462 0.198011154186692 5.98983920623515 5.98759227011101 2517671.371298362 0.0797369024727525 33.5884252422856 2.08624286598674 -45.628088259558 4811558.12610544 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52
2187-Dec-06 23:28 < 00:01 Earth 0.387313247870157 0.387312466755111 0.387314028985151 3.98339209040908 3.9816646975345 2520185.477989456 0.503093237202967 23.9104309825746 2.12843301961979 -33.8470163475171 5145775.14834986 T 444 CATAB v2.0c-linF95 2014-Aug-13 13:52:41 2014-Aug-13 13:52

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