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 ]

[ hide orbit diagram ]
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.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 472 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2226061527928115 1.127e-08  
a 1.457946954650592 3.8009e-10 au
q 1.133398992099828 1.6568e-08 au
i 10.82819093043802 2.2454e-06 deg
node 304.3301876414188 8.777e-06 deg
peri 178.7990621331176 9.8931e-06 deg
M 207.3421249364721 4.1792e-06 deg
tp 2457873.163951058099
(2017-Apr-29.66395106)
7.4815e-06 JED
period 643.00005708888
1.76
2.5145e-07
6.884e-10
d
yr
n .5598755334950745 2.1894e-10 deg/d
Q 1.782494917201356 4.6471e-10 au
  Orbit Determination Parameters
   # obs. used (total)      5213  
   # delay obs. used      1  
   # Doppler obs. used      3  
   data-arc span      19279 days (52.78 yr)  
   first obs. used      1963-07-15  
   last obs. used      2016-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .43746  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-27 05:48:39  

Additional Information
 Earth MOID = .147632 au 
 Jupiter MOID = 3.29338 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. 2016-February); 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
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 0.314929549809014 0.314929037019613 0.31493006259897 5.57861467406797 5.57709786252383 2415380.562238011 0.0856596725541212 21.4953462390043 2.39069601993268 -31.1383846173325 4636123.67123578 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
1907-Nov-05 03:31 < 00:01 Earth 0.471485753722151 0.471485616940955 0.471485890503776 4.39449464828999 4.39320847821465 2417884.646193260 0.295988321277622 3.9279886562339 2.73390098999753 -4.67485172020043 6609465.89285799 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
1917-Apr-20 21:19 < 00:01 Earth 0.499257039068492 0.49925693714252 0.499257140994086 4.81677934299525 4.81567123684284 2421339.388375989 0.215933319844755 4.300896677731 3.20075013240838 14.0034640739517 7049571.42916823 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
1924-Mar-05 22:13 < 00:01 Earth 0.359786212357496 0.359785847796852 0.359786576917833 4.59606509319425 4.59445349111724 2423850.425528454 0.139408116225569 14.3669689090435 2.61599665202799 27.3516301376601 3819005.55849346 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
1931-Jan-30 04:07 < 00:01 Earth 0.174073006491238 0.174072737402038 0.17407327558145 5.92081949634617 5.91823370218729 2426371.671220904 0.0332024837976742 13.1413068105904 1.8470791901856 53.4591066607834 5340634.70346812 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
1938-Jan-13 22:04 < 00:01 Earth 0.215005491773517 0.215005178760047 0.215005804787041 6.08405450277993 6.08201726169741 2428912.419537650 0.0317499442824643 13.8995301841112 2.15405673373759 -42.3427173230112 4886334.53133724 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
1944-Nov-27 01:41 < 00:01 Earth 0.403009233895542 0.403008996293631 0.403009471497704 3.62609871056881 3.62427495359344 2431421.569910605 0.231991277405458 7.11202874309818 2.1798501407877 -31.9276763580174 5041453.54555539 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
1961-Apr-04 09:08 < 00:01 Earth 0.442492037971095 0.442491933292755 0.442492142650231 3.70783545777863 3.70621110041 2437393.880354804 0.164741471503959 4.69796896606683 2.24453451332986 8.42934241689609 4606011.35703317 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
1968-Feb-11 13:46 < 00:01 Earth 0.266271302088055 0.266271108061318 0.266271496114843 6.06688673602202 6.06523712650003 2439898.073413303 0.0274062225961744 8.13950519534677 2.06963163871877 26.7564171983651 4637796.30462739 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
1975-Jan-23 07:39 < 00:01 Earth 0.151134257509578 0.151134236728327 0.151134278290872 5.82530958662767 5.82228237148081 2442435.819050965 0.0182132727173218 5.09304513026082 1.89255419607775 -86.2530909631591 5521562.22502982 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
1981-Dec-29 08:05 < 00:01 Earth 0.308489385220955 0.308489255506155 0.308489514935214 5.66527320054816 5.66374841164707 2444967.836506526 0.0283656019422478 6.32836612093223 2.38519914063907 -28.6280467483191 5103364.50735127 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
1988-Nov-06 14:56 < 00:01 Earth 0.467640226499196 0.467640157426606 0.467640295573109 4.30590159870557 4.30457816210872 2447472.122256094 0.0815342184178893 3.77267545513096 2.66343009366836 -5.81841784388952 6716718.10172421 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
2005-Mar-08 22:07 < 00:01 Earth 0.365567257860299 0.3655671975709 0.36556731814978 4.41229504063473 4.41064284359524 2453438.421511512 0.0429615237272455 5.11062933286607 1.87664881752296 5.02928698919171 4034201.64235582 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
2012-Jan-31 11:01 < 00:01 Earth 0.178675897762522 0.178675827467186 0.178675968058233 5.94519770815005 5.9426888753065 2455957.958755740 0.014432798327924 3.67327139595287 1.77964769723689 39.469521869764 5211564.82775635 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
2019-Jan-15 06:01 < 00:01 Earth 0.208598635058773 0.208598541231489 0.208598728886626 6.04491905943879 6.04280563692335 2458498.750800881 0.018887054758487 4.55714044290444 2.1286249797238 -37.7500633829058 4995765.01039217 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
2025-Nov-30 02:18 < 00:01 Earth 0.397647392856554 0.397647297061549 0.397647488652298 3.72885339279514 3.72705599753737 2461009.595550762 0.094882974629904 4.48102352386643 1.68005576510477 -15.8300067017566 5079043.22020352 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
2042-Apr-06 19:02 < 00:01 Earth 0.446141834649055 0.446141759945417 0.44614190935276 3.72522627204059 3.72362273043417 2466981.292721539 0.168030016888461 4.37397520869794 2.41636893196401 7.0746266044654 4919355.14363085 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
2049-Feb-12 05:38 < 00:01 Earth 0.272555527339673 0.272555306199788 0.272555748480046 6.05906521203891 6.05745156119012 2469484.734554717 0.0271069698532958 9.93286341783621 2.27505845932764 31.854705301396 4813144.9220488 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
2056-Jan-24 11:03 < 00:01 Earth 0.149782199015087 0.149782151278064 0.149782246752756 5.82075958113684 5.81770264371293 2472021.960384337 0.0232625551407112 7.96462939259755 1.9527437683362 -80.9246324331371 5247514.82592501 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
2062-Dec-31 08:25 < 00:01 Earth 0.302953310760897 0.302953011251084 0.302953610270805 5.73224842699052 5.73071391677584 2474554.850488160 0.0508135408165089 12.2903727714493 2.32692970192338 -28.6751083532848 4521644.59600864 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
2069-Nov-08 21:29 < 00:01 Earth 0.464728077387281 0.464727971665033 0.464728183110288 4.24541441934498 4.2440637083139 2477059.395096287 0.208388250647252 3.83278566955279 2.63364684699395 -7.63816580678779 6519789.54926746 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
2086-Mar-11 22:55 < 00:01 Earth 0.371310292825642 0.371309914833697 0.371310670817324 4.22586087122046 4.22416244198395 2483026.454760294 0.185397941319329 14.5867527200407 2.83971054883582 30.6011250045072 3715234.99422827 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
2093-Jan-31 15:47 < 00:01 Earth 0.182464155343126 0.182463821687729 0.182464488999951 5.9749161208277 5.97247161074343 2485544.157526833 0.0367978716192459 16.6648732314819 1.93978476849886 52.186343859198 5271776.20914346 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
2100-Jan-16 11:39 < 00:01 Earth 0.203878855807807 0.203878410976888 0.203879300639738 6.01492046100092 6.01274731582009 2488084.985234336 0.046526580759821 18.6674932546582 2.10201591953729 -43.1558127290596 4745321.45037664 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
2106-Dec-04 02:22 < 00:01 Earth 0.392290975095902 0.392290555562223 0.39229139462805 3.85303636250081 3.85127316763484 2490597.598776481 0.31041437229819 12.6148322795678 2.08574888867979 -32.46841803356 5097198.49334825 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
2123-Apr-10 05:51 < 00:01 Earth 0.449703096150481 0.449702887097321 0.449703305200083 3.75372821637844 3.75214946045755 2496568.744048400 0.454483450335639 4.89116759927696 2.86614691718794 21.5948593830525 4925318.10992936 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
2130-Feb-14 22:11 < 00:01 Earth 0.278164988173841 0.278164368930763 0.278165607417496 6.03818397128784 6.03659739627304 2499071.424506112 0.0685336225264772 26.0108420614975 2.29867176986708 32.3940906328394 4662649.5047427 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
2137-Jan-25 14:12 < 00:01 Earth 0.149462324348532 0.149462258810925 0.14946238989029 5.81427773912458 5.81121084059928 2501608.091593537 0.0473084934919961 19.4873277668924 1.93417306307199 -84.9417709492892 5324225.75710661 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
2144-Jan-03 10:26 < 00:01 Earth 0.296579935417425 0.296579238289087 0.296580632546259 5.79436085642733 5.79281017291653 2504141.934978944 0.101303066529974 28.0176850169176 2.34612791384515 -30.8848215073061 4519597.18213931 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
2150-Nov-12 07:12 < 00:01 Earth 0.460944456317081 0.460944151577568 0.460944761060539 4.1744976963213 4.17311275433346 2506646.799884497 0.46563427869892 4.67116284264505 2.74742763679157 -22.3144519725724 5840470.97827871 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
2167-Mar-16 05:30 < 00:01 Earth 0.377434239387682 0.377433499769567 0.377434979005889 4.02624433038523 4.02449058908324 2512614.729453402 0.409410225052261 25.8032866595485 2.86809661090028 31.991332532235 3597838.48526309 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
2174-Feb-03 01:31 < 00:01 Earth 0.188400772046112 0.188400088399211 0.188401455697365 6.00554654649593 6.00319115927124 2515130.562869063 0.0688510385132994 32.1447091023005 1.93827912620457 49.4773916252914 5248039.57181202 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
2181-Jan-17 20:55 < 00:01 Earth 0.198010329324215 0.198009543496025 0.198011115156371 5.98983900498481 5.98759206834558 2517671.371302004 0.0796902367159932 33.5751086694647 2.08054877640234 -45.6310379338379 4824925.32407121 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49
2187-Dec-06 23:28 < 00:01 Earth 0.387313207434048 0.387312426561577 0.387313988307107 3.98339255427631 3.98166516142258 2520185.478000260 0.502866633519025 23.8998430746755 2.12018134559255 -33.8452673985759 5165265.8253194 T 472 CATAB v2.0c-linF95 2016-Apr-27 05:49:01 2016-Apr-27 05:49

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 2016-May-05 23:49 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin