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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 445 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2226338074012698 1.1287e-08  
a 1.457960681645452 3.8114e-10 AU
q 1.133369344049375 1.6597e-08 AU
i 10.8289993907707 2.2524e-06 deg
node 304.3345376060526 8.8001e-06 deg
peri 178.7956768419359 9.9304e-06 deg
M 231.4013671184009 4.1791e-06 deg
tp 2457230.194711382372
(2015-Jul-26.69471138)
7.4743e-06 JED
period 643.0091381592435
1.76
2.5214e-07
6.903e-10
d
yr
n .5598676265015143 2.1954e-10 deg/d
Q 1.782552019241529 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-Sep-12 13:35:15  

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 0.314929512634529 0.314928999547409 0.314930025722018 5.57861547492068 5.57709866341528 2415380.562249136 0.0857232874111492 21.5074319420059 2.39766647898201 -31.138238323075 4622984.12512238 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
1907-Nov-05 03:31 < 00:01 Earth 0.471485735588834 0.471485598603432 0.471485872574029 4.39449424744509 4.39320807720292 2417884.646198563 0.296120268208491 3.95154480984656 2.74423021570054 -4.43305008469807 6567923.37265716 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
1917-Apr-20 21:19 < 00:01 Earth 0.499257053986349 0.499256951772956 0.499257156200188 4.81677969761552 4.81567159157782 2421339.388380105 0.215998139611322 4.32784877550837 3.21059938433712 13.7670320134315 7002667.22327132 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
1924-Mar-05 22:13 < 00:01 Earth 0.359786231276984 0.359785866522259 0.359786596032636 4.59606500837249 4.59445340635048 2423850.425531925 0.139486047765027 14.3769813003752 2.62436869213521 27.3266956377298 3805119.49555477 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
1931-Jan-30 04:07 < 00:01 Earth 0.174073017261085 0.174072747946605 0.174073286577017 5.92081950721942 5.91823371322531 2426371.671224485 0.0332320447521869 13.1507765505248 1.8522895012123 53.4473250268494 5324945.10661201 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
1938-Jan-13 22:04 < 00:01 Earth 0.215005480750201 0.215005167554507 0.215005793946416 6.0840545974528 6.08201735629752 2428912.419540468 0.0317823230496724 13.9088355159492 2.16006499362417 -42.3473465163573 4873443.62199753 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
1944-Nov-27 01:41 < 00:01 Earth 0.403009227720527 0.403008990005737 0.403009465433695 3.62609873440427 3.62427497741295 2431421.569913438 0.232149063701161 7.12081739633183 2.18827180382806 -31.8745391746777 5019174.34644621 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
1961-Apr-04 09:08 < 00:01 Earth 0.442492041536914 0.442491936675707 0.442492146398156 3.70783552625471 3.70621116892918 2437393.880355589 0.16482560283912 4.71924633251478 2.25239367876669 8.30793816861411 4581236.52022447 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
1968-Feb-11 13:46 < 00:01 Earth 0.266271305010169 0.266271110833723 0.266271499187005 6.0668870414712 6.06523743205038 2439898.073411388 0.027439176491931 8.14666099310233 2.07557102425047 26.7231916717448 4622428.46313684 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
1975-Jan-23 07:39 < 00:01 Earth 0.151134257301937 0.151134236546094 0.151134278057867 5.8253096432743 5.82228242815273 2442435.819052037 0.018252187764997 5.09778330087738 1.89771567417916 -86.2832884233353 5506713.42548984 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
1981-Dec-29 08:05 < 00:01 Earth 0.308489384786792 0.308489255015243 0.308489514558886 5.66527342978219 5.66374864094066 2444967.836508749 0.028422759331269 6.33422316288184 2.3919066981481 -28.6060796597762 5090080.17457913 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
1988-Nov-06 14:56 < 00:01 Earth 0.467640227082558 0.467640157913313 0.467640296253127 4.30590162353207 4.30457818694451 2447472.122255815 0.0816752655767683 3.79454773917475 2.67372399125082 -5.55275938402516 6675200.89540253 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
2005-Mar-08 22:07 < 00:01 Earth 0.365567257933034 0.365567197582262 0.365567318283804 4.41229521644651 4.41064301947321 2453438.421510672 0.0430368462283583 5.1227262629587 1.88389195128683 4.98884472280553 4022847.74856512 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
2012-Jan-31 11:01 < 00:01 Earth 0.178675897339151 0.17867582700768 0.17867596767016 5.94519768075682 5.94268884789576 2455957.958757540 0.0144668860585349 3.67666356883755 1.78376178063571 39.3783205124958 5195692.01259259 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
2019-Jan-15 06:01 < 00:01 Earth 0.208598635929543 0.208598542168187 0.208598729691096 6.04491910208275 6.04280567959105 2458498.750801089 0.0189269802823 4.55840139334837 2.13435528579592 -37.7119305662069 4983117.08835861 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
2025-Nov-30 02:18 < 00:01 Earth 0.397647394467619 0.397647298713319 0.397647490221345 3.72885334058219 3.72705594530653 2461009.595550197 0.0949866560775679 4.48863752987348 1.68723052733945 -15.7754257429105 5060420.65400088 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
2042-Apr-06 19:02 < 00:01 Earth 0.446141834866342 0.446141760331971 0.446141909399263 3.72522623401338 3.72362269239137 2466981.292720233 0.16833043189858 4.39335689384389 2.42562504124873 6.91191721403986 4894089.2814499 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
2049-Feb-12 05:38 < 00:01 Earth 0.272555526020433 0.272555304901039 0.272555747139371 6.05906503784516 6.05745138694216 2469484.734557038 0.0271279678636597 9.93758473045818 2.28265941458303 31.8519968337107 4798460.78667543 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
2056-Jan-24 11:03 < 00:01 Earth 0.149782199660875 0.149782151909265 0.149782247412668 5.82075962979393 5.81770269240878 2472021.960383905 0.0233015647073414 7.96634439935527 1.95837464018641 -80.9163757425617 5232335.13953988 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
2062-Dec-31 08:25 < 00:01 Earth 0.302953317221272 0.302953017698626 0.302953616744499 5.73224853108767 5.73071402093358 2474554.850488517 0.0508502565660435 12.2952605046563 2.33335579430782 -28.6631904441445 4508858.12692031 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
2069-Nov-08 21:29 < 00:01 Earth 0.464728083554242 0.464727978338524 0.464728188771178 4.24541439104761 4.24406368002545 2477059.395096076 0.208570236481236 3.8510000142944 2.64476564169771 -7.3730474175513 6484806.64120612 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
2086-Mar-11 22:55 < 00:01 Earth 0.371310276948051 0.37130989890843 0.371310654986497 4.2258615940954 4.2241631650769 2483026.454752157 0.185509969131635 14.5954854882261 2.85044992614677 30.6041749862678 3702681.00003314 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
2093-Jan-31 15:47 < 00:01 Earth 0.182464138780649 0.182463805092734 0.182464472469749 5.97491616461963 5.97247165433135 2485544.157524006 0.0368231977018271 16.6702467715867 1.94569079827807 52.1886913814107 5256053.26082309 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
2100-Jan-16 11:39 < 00:01 Earth 0.203878879598983 0.20387843464469 0.203879324554787 6.01492070865919 6.01274756382151 2488084.985233894 0.0465620703092348 18.6737454136807 2.10775750826404 -43.1500183079654 4732060.27262405 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
2106-Dec-04 02:22 < 00:01 Earth 0.392291001464979 0.392290581891836 0.392291421036588 3.85303585803348 3.8512726630551 2490597.598764908 0.31055831347314 12.6207424266801 2.09445095611061 -32.4679296887799 5077150.29848474 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
2123-Apr-10 05:51 < 00:01 Earth 0.449703070704482 0.449702862634076 0.449703278775528 3.75372778909217 3.75214903290214 2496568.744039331 0.454866218201908 4.90461821427189 2.87973383239834 21.3828134512737 4899397.37403655 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
2130-Feb-14 22:11 < 00:01 Earth 0.278164942530255 0.278164323109672 0.278165561951161 6.03818422027255 6.03659764506282 2499071.424498998 0.0685638071789719 26.0223582232762 2.30632318744033 32.3968957462866 4647785.13221614 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
2137-Jan-25 14:12 < 00:01 Earth 0.149462328953918 0.149462263390369 0.149462394521623 5.81427779598916 5.8112108975884 2501608.091589075 0.0473466602153632 19.4942905164177 1.93970545849881 -84.9375710825427 5309007.18457039 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
2144-Jan-03 10:26 < 00:01 Earth 0.296579992658664 0.296579295310049 0.296580690007775 5.79436035694073 5.79280967359556 2504141.934968046 0.101353078727996 28.0293829840017 2.352732464574 -30.8814927996619 4506691.97314529 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
2150-Nov-12 07:12 < 00:01 Earth 0.460944495462875 0.460944191882661 0.460944799049096 4.1744982826175 4.17311334094188 2506646.799874007 0.465910407959323 4.6810943100028 2.76296015890257 -22.1477790322938 5812655.22157029 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
2167-Mar-16 05:30 < 00:01 Earth 0.377434175975039 0.377433436120451 0.377434915831431 4.02624604714672 4.02449230629813 2512614.729428934 0.409629642399454 25.8160983832182 2.87895838880244 31.9965661162782 3585130.02322723 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
2174-Feb-03 01:31 < 00:01 Earth 0.188400711399904 0.188400027554197 0.188401395250214 6.0055463972183 6.00319100917669 2515130.562861477 0.0688861471192591 32.1572818798827 1.94415036553875 49.4794910274028 5232388.54721488 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
2181-Jan-17 20:55 < 00:01 Earth 0.198010398490311 0.198009612361093 0.198011184623496 5.98983927125203 5.98759233549774 2517671.371294370 0.07973691442614 33.5884283080591 2.08624294462365 -45.6280785181134 4811557.92953907 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35
2187-Dec-06 23:28 < 00:01 Earth 0.387313279247475 0.387312498132447 0.387314060363091 3.98339149504215 3.98166410204924 2520185.477976684 0.503093498388668 23.9104194886383 2.1284329686488 -33.8470184542313 5145775.32227567 T 445 CATAB v2.0c-linF95 2014-Sep-12 13:35:29 2014-Sep-12 13:35

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