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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 438 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .222633384296753 1.0574e-08  
a 1.457965049731591 2.3524e-10 AU
q 1.133373356523463 1.5475e-08 AU
i 10.82897925402693 2.5e-06 deg
node 304.335260379523 5.6724e-06 deg
peri 178.7833319775369 7.7176e-06 deg
M 119.445884428768 4.0435e-06 deg
tp 2456587.152387869282
(2013-Oct-21.65238787)
7.2219e-06 JED
period 643.0120278682489
1.76
1.5562e-07
4.261e-10
d
yr
n .5598651104451235 1.355e-10 deg/d
Q 1.782556742939719 2.8761e-10 AU
  Orbit Determination Parameters
   # obs. used (total)      5046  
   # delay obs. used      1  
   # Doppler obs. used      3  
   data-arc span      18530 days (50.73 yr)  
   first obs. used      1963-07-15  
   last obs. used      2014-04-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49515  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:35:17  

Additional Information
 Earth MOID = .148916 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. 2013-Sep-12) 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 0.314929399486171 0.314929076744551 0.31492972222761 5.57862115221688 5.5771043417105 2415380.562307233 0.0579942235450478 13.6888466116875 2.61827029732975 -29.7719008367169 4215303.83854596 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
1907-Nov-05 03:31 < 00:01 Earth 0.471485697620467 0.471485612142455 0.471485783097785 4.39449249919885 4.39320632834126 2417884.646227928 0.190464413202238 4.2219089258205 3.01382701899395 -7.868755655545 6182714.06823485 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
1917-Apr-20 21:19 < 00:01 Earth 0.499257144108243 0.499257079607238 0.499257208608936 4.81678079005851 4.81567268447224 2421339.388400209 0.149163875008533 4.66075164966531 3.34875220129605 18.764997529249 6658146.21410105 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
1924-Mar-05 22:13 < 00:01 Earth 0.359786341092837 0.35978611411617 0.359786568070295 4.59606540258215 4.59445380119041 2423850.425555870 0.0927607289540341 9.82768620384439 2.72887283299886 24.7348680168143 3672228.13378622 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
1931-Jan-30 04:07 < 00:01 Earth 0.174073079623324 0.174072915431374 0.17407324381547 5.92082166148385 5.91823586935756 2426371.671236854 0.0208645083949675 8.45377705655735 1.97316688026791 52.4299226941798 4983942.85189266 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
1938-Jan-13 22:04 < 00:01 Earth 0.215005415191606 0.215005219536936 0.215005610846219 6.08405648709813 6.08201924595452 2428912.419561769 0.0230187095679177 8.91673719533624 2.28555953507509 -40.5770694621399 4576572.63254785 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
1944-Nov-27 01:41 < 00:01 Earth 0.403009204533006 0.403009046067992 0.403009362998911 3.62609996142191 3.62427620494307 2431421.569948073 0.153828653643026 5.11164214523083 1.94714717087159 -27.9959126817844 5530237.46266121 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
1961-Apr-04 09:08 < 00:01 Earth 0.442492098638326 0.442492022002294 0.442492175273413 3.7078359778224 3.70621162090445 2437393.880364399 0.124062312491688 4.50162667336669 2.44354914433194 7.77093012439588 4741821.44452786 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
1968-Feb-11 13:46 < 00:01 Earth 0.266271338208315 0.266271223280568 0.266271453135549 6.06688916445166 6.06523955581395 2439898.073415989 0.0195504212739496 5.72796797469257 2.1322685079635 21.8026338843162 4529988.10949128 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
1975-Jan-23 07:39 < 00:01 Earth 0.151134258977592 0.15113423969717 0.151134278258065 5.82531151211681 5.82228429800049 2442435.819061275 0.0130902441983098 3.29803226291845 2.07443093416152 -87.2419267429719 5043225.8693894 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
1981-Dec-29 08:05 < 00:01 Earth 0.308489398977218 0.308489315575883 0.308489482378032 5.66527648421705 5.66375169626799 2444967.836530334 0.0255529561332293 4.73917613237196 2.3970882780693 -16.0567588251278 4877993.20135213 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
1988-Nov-06 14:56 < 00:01 Earth 0.467640266177255 0.467640206888359 0.467640325466811 4.30590173497899 4.30457829853635 2447472.122261712 0.0688659441515886 4.09417329880617 2.94461681061895 -7.86149465618639 6211036.57463088 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
2005-Mar-08 22:07 < 00:01 Earth 0.365567240713244 0.365567191398674 0.365567290028095 4.41229904578311 4.41064685016641 2453438.421488323 0.0414724811615513 4.88706966613339 1.89166132408839 1.64501438564513 4128209.11296045 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
2012-Jan-31 11:01 < 00:01 Earth 0.178675864461583 0.178675819876169 0.178675909046728 5.94519944266281 5.94269061008383 2455957.958757442 0.0100962045540426 2.82678296934529 1.43163997987823 16.87502210937 4962375.34105004 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
2019-Jan-15 06:01 < 00:01 Earth 0.208598700615974 0.208598653628309 0.208598747603283 6.04492127725309 6.04280785617763 2458498.750805500 0.0154681071776627 3.27286142937456 2.10721859054182 -23.5279731993137 5030159.15288237 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
2025-Nov-30 02:18 < 00:01 Earth 0.397647484165131 0.397647398651757 0.39764756967796 3.72885382859167 3.72705643395689 2461009.595545284 0.073895219272752 3.91676077777253 1.67314347795457 -16.4944949139546 5620618.57889841 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
2042-Apr-06 19:01 < 00:01 Earth 0.446141799112122 0.446141740013158 0.446141858210115 3.72522535692466 3.72362181479639 2466981.292699505 0.118463538822485 4.38201395914476 2.50390456636717 6.06050249079931 4882883.88494663 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
2049-Feb-12 05:38 < 00:01 Earth 0.272555419824822 0.272555295413841 0.272555544235918 6.05906841219283 6.05745476155991 2469484.734531954 0.0203787410535393 6.36541480989345 2.32844352592301 26.327055711222 4611398.61231223 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
2056-Jan-24 11:03 < 00:01 Earth 0.149782221584895 0.1497821942491 0.149782248920747 5.82076158604331 5.81770465013364 2472021.960384429 0.0157979092595491 4.91552631058026 2.09400499597955 -82.1062991559349 4913402.21656669 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
2062-Dec-31 08:25 < 00:01 Earth 0.302953469086311 0.302953288179446 0.302953649993797 5.73224957888067 5.73071506977647 2474554.850476683 0.0353716288890835 8.10851878034956 2.50881479950827 -26.0291633303184 4290799.07101402 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
2069-Nov-08 21:29 < 00:01 Earth 0.464728207525361 0.464728135512033 0.464728279537638 4.24541607942785 4.24406536930341 2477059.395077844 0.140069864593511 4.04835718651727 2.90763947463324 -8.58543751756962 6176149.29383577 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
2086-Mar-11 22:55 < 00:01 Earth 0.37131013677329 0.371309912744586 0.371310360802897 4.2258682354976 4.22416980850812 2483026.454686616 0.120255303716875 9.56296135343443 2.80913281079775 26.7570402485689 3651493.41044937 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
2093-Jan-31 15:47 < 00:01 Earth 0.18246400097572 0.182463795330847 0.182464206621664 5.97491746643633 5.9724729548343 2485544.157511716 0.023988033223858 10.3686596335793 2.03966443089279 50.8230314334564 4962228.59781352 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
2100-Jan-16 11:39 < 00:01 Earth 0.203879061582644 0.203878793951227 0.203879329214151 6.0149231419971 6.01274999997898 2488084.985222741 0.0303869288073746 11.7346852672654 2.22705089427986 -42.9076324106026 4517749.87194184 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
2106-Dec-04 02:22 < 00:01 Earth 0.392291200503384 0.392290934756817 0.392291466250798 3.85303495546876 3.85127176097197 2490597.598722592 0.198391733378268 8.42805276972607 1.97561244040258 -31.3312656249905 5406124.61768055 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
2123-Apr-10 05:51 < 00:01 Earth 0.449702959664642 0.449702849819758 0.449703069511162 3.75372551528299 3.75214675774633 2496568.743995304 0.287313294645643 4.58660843939679 2.75864450350219 12.0922459687298 4858939.015288 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
2130-Feb-14 22:11 < 00:01 Earth 0.278164722188034 0.278164343101891 0.278165101274403 6.03818813838536 6.03660156294847 2499071.424455625 0.0449120618797775 16.2231128966808 2.44936755241538 31.5344137794796 4357192.76588996 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
2137-Jan-25 14:12 < 00:01 Earth 0.149462352635858 0.14946231682624 0.149462388446513 5.81427971281397 5.81121281591089 2501608.091580635 0.0303107592181924 12.1402783464563 2.08697388251292 -85.3798066381755 4937890.17898687 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
2144-Jan-03 10:26 < 00:01 Earth 0.296580249944213 0.296579818687034 0.296580681201607 5.79436049700701 5.79280981504473 2504141.934935344 0.0647533746418851 17.7521677393899 2.56309609486645 -30.5269305250861 4174018.06195134 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
2150-Nov-12 07:12 < 00:01 Earth 0.460944686369952 0.460944530282279 0.460944842459283 4.17450096973192 4.17311602952176 2506646.799836318 0.297211647582441 4.28975536621979 2.94054020740147 -17.042749692394 5904680.29187948 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
2167-Mar-16 05:30 < 00:01 Earth 0.377433951084938 0.377433498841126 0.377434403327638 4.02625502398686 4.02450128600489 2512614.729323417 0.258148762242013 16.339768626253 2.86281881318556 30.6867953621589 3564376.37961706 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
2174-Feb-03 01:30 < 00:01 Earth 0.18840048552091 0.188400059342897 0.188400911700665 6.00554741746116 6.00319202699535 2515130.562838141 0.0439848146692667 20.048719624116 2.05019523480886 49.0342487636528 4941427.96497775 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
2181-Jan-17 20:55 < 00:01 Earth 0.198010658147265 0.198010174521735 0.198011141774954 5.98984212651235 5.98759519477656 2517671.371276462 0.0504790340485156 21.0391793891495 2.21304658845406 -45.6698626282279 4554628.20023517 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35
2187-Dec-06 23:28 < 00:01 Earth 0.387313562403111 0.387313072797477 0.387314052008999 3.98338898670398 3.98166159388599 2520185.477903767 0.317078985301055 15.3177749365092 2.05966570581873 -33.5097487755818 5331678.44014455 T 438 CATAB v2.0c-linF95 2014-Apr-17 13:35:29 2014-Apr-17 13:35

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-Apr-24 22:30 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin