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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 ]

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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 462 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2226786588694712 1.1278e-08  
a 1.457877746420397 3.8258e-10 au
q 1.133239485051856 1.6583e-08 au
i 10.82860240585357 2.2478e-06 deg
node 304.3298185742141 8.7907e-06 deg
peri 178.7980365013777 9.9127e-06 deg
M 95.36114805250125 4.1779e-06 deg
tp 2457230.186506574978
(2015-Jul-26.68650657)
7.4532e-06 JED
period 642.9542731517037
1.76
2.5309e-07
6.929e-10
d
yr
n .5599154015033022 2.204e-10 deg/d
Q 1.782516007788937 4.6777e-10 au
  Orbit Determination Parameters
   # obs. used (total)      5181  
   # delay obs. used      1  
   # Doppler obs. used      3  
   data-arc span      18788 days (51.44 yr)  
   first obs. used      1963-07-15  
   last obs. used      2014-12-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .43793  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Nov-30 15:28:59  

Additional Information
 Earth MOID = .148887 au 
 Jupiter MOID = 3.29421 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. 2015-December); 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 0.314929545269119 0.314929032289966 0.314930058248641 5.57861502897677 5.57709821750728 2415380.562241482 0.0856969667859089 21.5013136078382 2.39297841771523 -31.1396604772452 4631968.03005976 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
1907-Nov-05 03:31 < 00:01 Earth 0.471485751996205 0.471485614912952 0.47148588908017 4.3944945134613 4.39320834334177 2417884.646194524 0.296027159430754 3.93724264383822 2.73773416524972 -4.52923638828358 6592595.05719039 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
1917-Apr-20 21:19 < 00:01 Earth 0.499257040956533 0.499256938745955 0.499257143167561 4.81677927137236 4.81567116520766 2421339.388375295 0.215935922992251 4.31244817839736 3.20455243147472 13.8827690346874 7029068.42469467 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
1924-Mar-05 22:13 < 00:01 Earth 0.359786213031855 0.359785848375622 0.359786577688254 4.59606507435305 4.59445347227244 2423850.425529135 0.13944143205537 14.3727470511714 2.62006962385105 27.3348815668711 3811700.5611375 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
1931-Jan-30 04:07 < 00:01 Earth 0.174073006572473 0.174072737346219 0.174073275800446 5.92081951806746 5.91823372391928 2426371.671221326 0.0332137495217595 13.1468206192929 1.84805171982922 53.4526428286412 5337397.31553805 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
1938-Jan-13 22:04 < 00:01 Earth 0.2150054925767 0.215005179441285 0.215005805713102 6.08405465972644 6.0820174187041 2428912.419539270 0.0317717338550576 13.9045197797453 2.15707573777174 -42.3471015578955 4880027.81507386 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
1944-Nov-27 01:41 < 00:01 Earth 0.403009235498825 0.403008997763935 0.403009473233966 3.6260986963668 3.62427493939154 2431421.569910545 0.23205252385806 7.11489455185403 2.1816372613555 -31.9095466503357 5035866.59240492 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
1961-Apr-04 09:08 < 00:01 Earth 0.442492037722632 0.442491932913204 0.442492142530865 3.70783549327971 3.70621113592573 2437393.880354691 0.164752656477037 4.70978727678984 2.24686865824983 8.37557089288671 4593076.47949058 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
1968-Feb-11 13:46 < 00:01 Earth 0.266271301667532 0.266271107557966 0.266271495777488 6.06688694445397 6.06523733498605 2439898.073411547 0.0274138129306002 8.14340678704704 2.07057266491385 26.7420005829523 4633939.59168183 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
1975-Jan-23 07:39 < 00:01 Earth 0.151134257708115 0.151134236933914 0.15113427848236 5.82530962447314 5.82228240934993 2442435.819050936 0.0182341907223449 5.09578706900661 1.89428413476403 -86.2748615310239 5516638.92127074 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
1981-Dec-29 08:05 < 00:01 Earth 0.308489385461067 0.308489255664009 0.308489515258924 5.66527307096414 5.66374828202935 2444967.836505272 0.0283991643567001 6.32996662148525 2.38767983273453 -28.6281623230219 5099369.68137671 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
1988-Nov-06 14:56 < 00:01 Earth 0.467640226911314 0.467640157741936 0.467640296081216 4.30590159695629 4.30457816036007 2447472.122255922 0.0815365991479888 3.78066535970208 2.66731458724965 -5.6702667288935 6700889.834841 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
2005-Mar-08 22:07 < 00:01 Earth 0.365567258423994 0.365567198158243 0.365567318689793 4.41229528295491 4.41064308600874 2453438.421509630 0.0429842125098804 5.11778549732385 1.88017962738301 5.00527764405949 4027559.05932999 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
2012-Jan-31 11:01 < 00:01 Earth 0.178675898243302 0.178675827938267 0.178675968548479 5.9451976879726 5.94268885512728 2455957.958757048 0.0144416556952875 3.67467250516231 1.78042635621929 39.4429308162434 5207691.19705846 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
2019-Jan-15 06:01 < 00:01 Earth 0.208598634914358 0.20859854109356 0.208598728735121 6.04491912535712 6.04280570286328 2458498.750801438 0.0189152430491604 4.55732758734015 2.13160538664031 -37.7356007308726 4989659.85245989 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
2025-Nov-30 02:18 < 00:01 Earth 0.397647393395385 0.397647297589598 0.397647489199788 3.72885339224993 3.72705599699434 2461009.595551092 0.0948998246576194 4.48121262859142 1.68222865204317 -15.8263449264687 5076166.75139435 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
2042-Apr-06 19:02 < 00:01 Earth 0.446141835419482 0.446141760861902 0.446141909978066 3.72522625611199 3.72362271450148 2466981.292720665 0.168206617291793 4.38350552350138 2.41992148371623 6.99876273804358 4907084.79935475 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
2049-Feb-12 05:38 < 00:01 Earth 0.2725555279331 0.272555306822063 0.272555749043683 6.0590652456304 6.05745159479408 2469484.734554858 0.027109146137315 9.9353244289318 2.27696483025774 31.8588396645352 4809921.09918643 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
2056-Jan-24 11:03 < 00:01 Earth 0.149782199097094 0.149782151334806 0.149782246859566 5.8207596232618 5.8177026858617 2472021.960384765 0.0232846177567395 7.9654923703092 1.95484036838567 -80.9196547584592 5241826.25434684 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
2062-Dec-31 08:25 < 00:01 Earth 0.302953311635097 0.302953012090712 0.302953611178791 5.7322485885433 5.7307140783763 2474554.850489402 0.0508336672552295 12.2928363450278 2.32933952875964 -28.6705289701681 4516802.5182908 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
2069-Nov-08 21:29 < 00:01 Earth 0.464728078937971 0.464727973495418 0.464728184380085 4.2454144817551 4.24406377074839 2477059.395095287 0.20848146036306 3.83850510035163 2.63821988797929 -7.49966654205321 6507766.55508598 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
2086-Mar-11 22:55 < 00:01 Earth 0.371310289639151 0.3713099116582 0.371310667621319 4.22586098671835 4.2241625575137 2483026.454759267 0.185463308350013 14.5916883184493 2.84591718666239 30.6041614100691 3708091.46181211 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
2093-Jan-31 15:47 < 00:01 Earth 0.182464151997934 0.182463818331189 0.182464485666259 5.9749161918503 5.97247168175027 2485544.157525628 0.0368090279335921 16.6676746941976 1.94108270685457 52.189162515074 5268469.40115005 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
2100-Jan-16 11:39 < 00:01 Earth 0.203878860266601 0.203878415360382 0.203879305173832 6.01492057631577 6.01274743122415 2488084.985234909 0.0465489551872289 18.6709746666283 2.10487016495065 -43.1523831143681 4738671.29889814 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
2106-Dec-04 02:22 < 00:01 Earth 0.392290979627643 0.392290560022566 0.392291399231189 3.85303624510302 3.85127305020368 2490597.598774030 0.310487533949242 12.6171539387785 2.08738477156157 -32.4756680158879 5094320.60140416 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
2123-Apr-10 05:51 < 00:01 Earth 0.44970309444511 0.449702886002299 0.449703302884355 3.75372810200992 3.75214934603491 2496568.744046009 0.45471871033584 4.89689530307585 2.87209823594857 21.4961492820668 4913777.99279068 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
2130-Feb-14 22:11 < 00:01 Earth 0.278164985067853 0.278164365736295 0.278165604400398 6.03818412147244 6.03659754647939 2499071.424504715 0.0685475395591954 26.0172550148753 2.30052948025879 32.3969411419367 4659289.99910031 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
2137-Jan-25 14:12 < 00:01 Earth 0.149462324673072 0.149462259102691 0.149462390246989 5.81427777947911 5.81121088098177 2501608.091593388 0.0473305862902472 19.4911714403535 1.93611677318213 -84.938938620728 5318857.96066738 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
2144-Jan-03 10:26 < 00:01 Earth 0.296579937196073 0.296579239933552 0.296580634459407 5.79436093195387 5.79281024847259 2504141.934979309 0.101330572776049 28.0244173223712 2.34870819090613 -30.8831587273293 4514493.29622032 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
2150-Nov-12 07:12 < 00:01 Earth 0.460944456898625 0.460944152692955 0.460944761106991 4.17449767606555 4.17311273407274 2506646.799884498 0.465795252136216 4.67299917489776 2.75446912982491 -22.2579133028169 5831056.92990241 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
2167-Mar-16 05:30 < 00:01 Earth 0.377434243747556 0.377433504022744 0.377434983473113 4.02624431950781 4.02449057822134 2512614.729454473 0.409541156730664 25.8104662059655 2.87453956937329 31.9952847348223 3590371.28470126 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
2174-Feb-03 01:31 < 00:01 Earth 0.188400776976423 0.188400093224112 0.188401460733337 6.00554662392572 6.00319123679306 2515130.562869374 0.0688697165060871 32.1516166700297 1.93947320886474 49.4791755837353 5244953.05544651 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
2181-Jan-17 20:55 < 00:01 Earth 0.198010323334453 0.198009537334982 0.19801110933789 5.98983907114611 5.98759213446372 2517671.371303584 0.0797180871051429 33.582650412027 2.08333410067692 -45.6291777924733 4818342.21826576 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29
2187-Dec-06 23:28 < 00:01 Earth 0.387313201132294 0.387312420093774 0.387313982172434 3.98339274531245 3.98166535251349 2520185.478004192 0.502991180146006 23.9055043379849 2.12125334410652 -33.8487401686548 5163134.76456547 T 462 CATAB v2.0c-linF95 2015-Nov-30 15:29:13 2015-Nov-30 15:29

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