Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 448 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2226338075484535 1.1286e-08  
a 1.457960681642999 3.8111e-10 AU
q 1.13336934383288 1.6594e-08 AU
i 10.82899936769493 2.2524e-06 deg
node 304.334537007124 8.7968e-06 deg
peri 178.7956776394965 9.9256e-06 deg
M 231.4013669934454 4.177e-06 deg
tp 2457230.194711604980
(2015-Jul-26.69471161)
7.4706e-06 JED
period 643.0091381576208
1.76
2.5212e-07
6.903e-10
d
yr
n .5598676265029273 2.1952e-10 deg/d
Q 1.782552019453119 4.6596e-10 AU
  Orbit Determination Parameters
   # obs. used (total)      5131  
   # delay obs. used      1  
   # Doppler obs. used      3  
   data-arc span      18701 days (51.20 yr)  
   first obs. used      1963-07-15  
   last obs. used      2014-09-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .43741  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 13:46:20  

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 0.314929544918946 0.314929031872991 0.31493005796527 5.57861506682321 5.57709825536233 2415380.562241964 0.0857180754584915 21.5061182968717 2.39764908870549 -31.1381087635228 4623009.52873668 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
1907-Nov-05 03:31 < 00:01 Earth 0.47148575207267 0.471485615155754 0.471485888989094 4.39449455802826 4.39320838792199 2417884.646194612 0.296113119348152 3.949017853965 2.74395388533371 -4.47144482725104 6572445.92362355 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
1917-Apr-20 21:19 < 00:01 Earth 0.499257041351617 0.499256939183614 0.499257143519561 4.81677938367993 4.81567127754195 2421339.388376749 0.215997992349535 4.32537126856789 3.2100386619308 13.8240960198926 7007663.18030382 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
1924-Mar-05 22:13 < 00:01 Earth 0.359786213994197 0.359785849264702 0.359786578724621 4.59606506372714 4.59445346164712 2423850.425529362 0.139479024566088 14.3762469643828 2.62396439943911 27.3286130470279 3805874.03770247 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
1931-Jan-30 04:07 < 00:01 Earth 0.174073006742496 0.17407273746284 0.174073276023167 5.92081948852899 5.91823369437043 2426371.671222306 0.0332291334594792 13.1496961336461 1.85219536437121 53.4481907196371 5325275.08450132 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
1938-Jan-13 22:04 < 00:01 Earth 0.215005492303273 0.215005179136042 0.215005805471024 6.08405460820579 6.0820173671636 2428912.419538772 0.0317796702374971 13.9077128981632 2.15993938515313 -42.3465399867961 4873658.98142197 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
1944-Nov-27 01:41 < 00:01 Earth 0.403009235843768 0.403008998152067 0.403009473538753 3.62609872095212 3.6242749639908 2431421.569910530 0.232138798584598 7.11998602726203 2.18758952630353 -31.88148071867 5021259.68564414 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
1961-Apr-04 09:08 < 00:01 Earth 0.442492037370548 0.44249193252382 0.442492142218072 3.70783543161524 3.70621107423294 2437393.880354346 0.164824899193255 4.71726945441078 2.25178535790231 8.33051192202329 4583915.38428997 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
1968-Feb-11 13:46 < 00:01 Earth 0.266271300804534 0.266271106652508 0.26627149495661 6.06688689572009 6.06523728623357 2439898.073412129 0.0274364963873521 8.14615922057689 2.07540270679078 26.724458871045 4622936.03135434 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
1975-Jan-23 07:39 < 00:01 Earth 0.151134257579306 0.151134236824543 0.151134278334183 5.82530963404115 5.82228241892033 2442435.819051635 0.0182478080753189 5.09718240608073 1.8976667543403 -86.2805783533656 5506841.10321958 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
1981-Dec-29 08:05 < 00:01 Earth 0.308489386072398 0.308489256317797 0.308489515827128 5.66527330074775 5.66374851187784 2444967.836507341 0.0284205953353665 6.33383041868171 2.39186185961662 -28.6047160780299 5090118.18220558 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
1988-Nov-06 14:56 < 00:01 Earth 0.467640227876435 0.467640158731426 0.467640297022274 4.30590153521356 4.30457809860109 2447472.122256999 0.0816732115314765 3.79231041641579 2.6734210021146 -5.59345698066496 6679539.18891354 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
2005-Mar-08 22:07 < 00:01 Earth 0.365567257889389 0.365567197530484 0.3655673182486 4.41229501223713 4.41064281518714 2453438.421512261 0.0430366921760762 5.12231372044672 1.8830492764392 4.9895829511752 4023277.45151151 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
2012-Jan-31 11:01 < 00:01 Earth 0.178675897357602 0.178675827037816 0.178675967677532 5.94519770538531 5.9426888725349 2455957.958756790 0.0144632213463586 3.67655496287035 1.78362336889633 39.3799197026789 5196130.66661196 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
2019-Jan-15 06:01 < 00:01 Earth 0.208598635574628 0.208598541813814 0.208598729335868 6.04491915409728 6.04280573162018 2458498.750801895 0.0189227344557152 4.55839187948786 2.13418792300316 -37.7110755252505 4983350.79082434 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
2025-Nov-30 02:18 < 00:01 Earth 0.397647393859624 0.397647298092333 0.397647489627655 3.72885339204278 3.72705599678918 2461009.595550526 0.0949839429893035 4.48835452560922 1.68665282820496 -15.7818667415122 5061874.12792337 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
2042-Apr-06 19:02 < 00:01 Earth 0.446141835323657 0.446141760744515 0.446141909903802 3.72522620527496 3.72362266364222 2466981.292720618 0.168293923384085 4.3917509067798 2.42476300233595 6.94239964502684 4896564.6328829 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
2049-Feb-12 05:38 < 00:01 Earth 0.27255552711182 0.272555305991665 0.272555748232465 6.05906533812161 6.05745168730506 2469484.734554045 0.0271270523015351 9.93714641428858 2.2824036679996 31.8500434861758 4798739.86686485 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
2056-Jan-24 11:03 < 00:01 Earth 0.149782199129944 0.149782151387884 0.149782246872939 5.8207596233952 5.81770268599584 2472021.960384674 0.0232961780710302 7.96618101375098 1.95826142989913 -80.9173077842946 5232650.07877227 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
2062-Dec-31 08:25 < 00:01 Earth 0.302953313709882 0.302953014190649 0.302953613229697 5.73224847865657 5.73071396847065 2474554.850488318 0.0508475668671903 12.2948514873284 2.33332008567641 -28.6632339371224 4508941.15528663 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
2069-Nov-08 21:29 < 00:01 Earth 0.46472808113156 0.464727975844317 0.46472818641956 4.24541452585157 4.24406381486527 2477059.395095207 0.208548432966783 3.84932326846404 2.64430267413313 -7.41371699105756 6488219.17918941 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
2086-Mar-11 22:55 < 00:01 Earth 0.371310282374296 0.371309904340167 0.371310660408727 4.22586089929197 4.22416247001893 2483026.454759468 0.185499259419908 14.594563452486 2.84968563213627 30.6021256130076 3703404.54165301 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
2093-Jan-31 15:47 < 00:01 Earth 0.182464143689003 0.182463810005275 0.18246447737416 5.97491617354141 5.97247166332255 2485544.157524560 0.0368200654353831 16.6696810630047 1.94553972034446 52.1880272688724 5256413.40281239 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
2100-Jan-16 11:39 < 00:01 Earth 0.20387887256189 0.203878427622859 0.20387931750243 6.01492062093273 6.01274747598832 2488084.985233741 0.0465574856707914 18.6731031853755 2.10763085972583 -43.1504007954056 4732375.48345713 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
2106-Dec-04 02:22 < 00:01 Earth 0.392290994046419 0.392290574476985 0.392291413617099 3.85303610794292 3.8512729130456 2490597.598769707 0.310542245696744 12.6203282886046 2.09374882799179 -32.4667891551529 5078610.40900335 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
2123-Apr-10 05:51 < 00:01 Earth 0.44970307728269 0.449702869067595 0.449703285494213 3.75372789271049 3.75214913658716 2496568.744042147 0.454816669066094 4.90382251786864 2.87813192861842 21.411705270618 4902061.57169486 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
2130-Feb-14 22:11 < 00:01 Earth 0.278164954002416 0.278164334601438 0.278165573403971 6.03818421135644 6.0365976362098 2499071.424500265 0.0685610896919087 26.0209935606154 2.30611178853457 32.3962029284281 4648121.6341308 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
2137-Jan-25 14:12 < 00:01 Earth 0.149462327627417 0.149462262075883 0.149462393181869 5.81427778304741 5.81121088461258 2501608.091589972 0.0473413312182699 19.4935179105935 1.93961065085791 -84.9380684636183 5309270.67160963 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
2144-Jan-03 10:26 < 00:01 Earth 0.296579978853924 0.296579281530592 0.296580676178266 5.79436046669675 5.79280978330877 2504141.934970494 0.101347590350248 28.0280880759058 2.35268934703289 -30.8815566517686 4506785.03652051 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
2150-Nov-12 07:12 < 00:01 Earth 0.460944486468708 0.460944182736392 0.460944790198371 4.1744981608263 4.17311321908322 2506646.799876702 0.465875025980274 4.6805360712511 2.76171873542356 -22.1717858206301 5815224.79747079 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
2167-Mar-16 05:30 < 00:01 Earth 0.377434190983018 0.377433451155584 0.377434930811199 4.02624554649918 4.02449180550217 2512614.729435494 0.409604943675518 25.8145860977251 2.87814977151628 31.9953351119238 3585994.27650461 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
2174-Feb-03 01:31 < 00:01 Earth 0.188400725193496 0.188400041369523 0.188401409022072 6.00554649629441 6.00319110846415 2515130.562862173 0.068881820405425 32.1558493016663 1.94400811254057 49.4791238821643 5232742.98257729 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
2181-Jan-17 20:55 < 00:01 Earth 0.198010382577494 0.198009596483101 0.198011168675856 5.98983926937151 5.98759233343591 2517671.371297033 0.079730811366047 33.5869452388543 2.08612365672436 -45.6283207740801 4811852.20994604 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46
2187-Dec-06 23:28 < 00:01 Earth 0.387313262793369 0.387312481704903 0.387314043882423 3.98339182120977 3.98166442828497 2520185.477982991 0.503066490577308 23.9093488798326 2.12787470012368 -33.846262197747 5147007.29751078 T 448 CATAB v2.0c-linF95 2014-Oct-09 13:46:33 2014-Oct-09 13:46

Alternate Designations
 1898 DQ = 1956 PC 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Oct-21 18:20 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin