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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 2456400.5 (2013-Apr-18.0) TDB
Reference: JPL 421 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2226677322030184 1.0578e-08  
a 1.45783727594768 2.3777e-10 AU
q 1.133223955791384 1.5484e-08 AU
i 10.82872662501955 2.5057e-06 deg
node 304.3380307222211 5.6788e-06 deg
peri 178.7912204366847 7.7276e-06 deg
M 255.4748716498277 4.0492e-06 deg
tp 2456587.172443187617
(2013-Oct-21.67244319)		 7.23e-06 JED
period 642.9275008628229
1.76		 1.5729e-07
4.306e-10		 d
yr
n .5599387170666554 1.3699e-10 deg/d
Q 1.782450596103975 2.9071e-10 AU
   Orbit Determination Parameters
   # obs. used (total)      4986  
   # delay obs. used      1  
   # Doppler obs. used      3  
   data-arc span      17948 days (49.14 yr)  
   first obs. used      1963-07-15  
   last obs. used      2012-09-03  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   fit RMS      .49387  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Apr-29 15:53:10  

Additional Information
 Earth MOID = .148425 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-May-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
Independent discovery earlier the same night by A. Charlois, Nice.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ 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 0.31492943701101 0.314929114239869 0.314929759781968 5.57862046814483 5.57710365764273 2415380.562296317 0.0580253561891635 13.690798782355 2.62366742262937 -29.765557142934 4206740.09649275 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
1907-Nov-05 03:31 < 00:01 Earth 0.471485722598096 0.471485636984519 0.47148580821189 4.39449295852225 4.3932067878754 2417884.646221810 0.190476053988188 4.22791274431497 3.0207251720888 -7.90182696691843 6174198.59530158 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
1917-Apr-20 21:19 < 00:01 Earth 0.499257121677916 0.499257057045202 0.499257186310487 4.81678009736764 4.81567199157918 2421339.388392310 0.14919304930704 4.6695870075297 3.35491604461764 18.8410613908601 6647913.22748397 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
1924-Mar-05 22:13 < 00:01 Earth 0.359786305474192 0.359786078514608 0.359786532434169 4.59606668826375 4.59445508717359 2423850.425540424 0.0927897137295599 9.83305983580915 2.7339525708184 24.7054924711338 3663930.28848623 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
1931-Jan-30 04:07 < 00:01 Earth 0.174073054652248 0.17407289046622 0.17407321883798 5.92082165566045 5.91823586317691 2426371.671233256 0.0208659652192703 8.45555812706522 1.97652338337362 52.4168843335328 4974912.25939102 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
1938-Jan-13 22:04 < 00:01 Earth 0.215005451868107 0.215005256225904 0.215005647509705 6.08405668309736 6.08201944237984 2428912.419557181 0.0230396723762625 8.91812017166554 2.29042475621452 -40.5707463675514 4567089.88048864 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
1944-Nov-27 01:41 < 00:01 Earth 0.403009238124152 0.40300907956642 0.403009396680863 3.62609980839741 3.62427605200513 2431421.569936955 0.153868159469187 5.11536589376595 1.947980961365 -27.9820211889119 5525882.93531967 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
1961-Apr-04 09:08 < 00:01 Earth 0.442492086677378 0.442492009906012 0.442492163449453 3.70783576953547 3.70621141249256 2437393.880358601 0.12412178791373 4.51081995268126 2.44737557556703 7.79959275127247 4733019.8178549 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
1968-Feb-11 13:46 < 00:01 Earth 0.26627132930876 0.266271214416853 0.266271444201107 6.0668893091585 6.06523970051541 2439898.073413982 0.0195618716287886 5.73163976290557 2.1351880264986 21.75989049212 4521432.05380727 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
1975-Jan-23 07:39 < 00:01 Earth 0.151134258668219 0.151134239407929 0.15113427792859 5.82531160310384 5.82228438904773 2442435.819060638 0.0131027910125622 3.29864496936892 2.07852326881985 -87.2752787057123 5033389.30277242 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
1981-Dec-29 08:05 < 00:01 Earth 0.308489397429777 0.308489314001087 0.308489480858319 5.66527625936433 5.66375147135671 2444967.836527807 0.0256006694102727 4.74335361630769 2.40042344058353 -15.9788587314559 4868913.91644506 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
1988-Nov-06 14:56 < 00:01 Earth 0.467640263953053 0.467640204535244 0.467640323370012 4.30590162525939 4.30457818878508 2447472.122262646 0.0688783254115238 4.09995394688952 2.95128975990491 -7.90133322600401 6202626.78396263 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
2005-Mar-08 22:07 < 00:01 Earth 0.365567248530392 0.365567199142051 0.365567297918768 4.41229920325671 4.41064700774476 2453438.421487851 0.0415557830649834 4.89786892665894 1.89430133098465 1.62713676472305 4118918.16541855 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
2012-Jan-31 11:01 < 00:01 Earth 0.178675863667046 0.178675819087636 0.178675908246187 5.94519957190467 5.94269073938493 2455957.958756058 0.01009893328069 2.83103692374023 1.43265172344512 16.8271961018002 4953283.28634074 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
2019-Jan-15 06:01 < 00:01 Earth 0.208598703396065 0.208598656400796 0.208598750390976 6.04492139701987 6.0428079760278 2458498.750805255 0.0154956590760249 3.27692405830049 2.11027729138043 -23.419967031124 5019604.97610101 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
2025-Nov-30 02:18 < 00:01 Earth 0.397647483825078 0.39764739815272 0.397647569497268 3.72885384339233 3.72705644877449 2461009.595545923 0.0739608732433892 3.92226841235716 1.67398569021093 -16.5051494377196 5615305.46693312 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
2042-Apr-06 19:01 < 00:01 Earth 0.446141805435284 0.446141746237694 0.446141864634681 3.72522546577266 3.72362192372412 2466981.292700225 0.118593209093548 4.3905832528601 2.50820293916332 6.0962547357311 4874038.38339099 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
2049-Feb-12 05:38 < 00:01 Earth 0.272555429465946 0.272555305084353 0.272555553847409 6.05906828395279 6.05745463335298 2469484.734534816 0.0203961457724978 6.36908243842577 2.33252634701791 26.3012502170634 4602898.01152185 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
2056-Jan-24 11:03 < 00:01 Earth 0.149782217229807 0.149782189910749 0.149782244548666 5.82076165368518 5.81770471774144 2472021.960385208 0.0158099527472612 4.91673682711908 2.09816796923347 -82.1011328248134 4903633.18714143 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
2062-Dec-31 08:25 < 00:01 Earth 0.302953437943315 0.30295325700431 0.302953618882942 5.73225017395455 5.73071566486162 2474554.850484809 0.0354049848465023 8.11261735178243 2.51349137763963 -26.0030987589859 4281910.55084864 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
2069-Nov-08 21:29 < 00:01 Earth 0.464728185399217 0.4647281133051 0.464728257492714 4.24541573237532 4.24406502208463 2477059.395082495 0.140116167484376 4.05381247145196 2.91417916528242 -8.63127502460983 6168271.32560293 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
2086-Mar-11 22:55 < 00:01 Earth 0.371310193016942 0.371309969002704 0.371310417029806 4.22586709181263 4.22416866463134 2483026.454704447 0.120322806495006 9.56856925098498 2.81498601925683 26.7366718805027 3643532.45869494 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
2093-Jan-31 15:47 < 00:01 Earth 0.18246405732859 0.18246385168644 0.182464262971328 5.97491781480832 5.97247330411943 2485544.157517618 0.0239943422468601 10.3708647936972 2.04333932119811 50.8196678701579 4953281.2899667 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
2100-Jan-16 11:39 < 00:01 Earth 0.203878979922122 0.203878712268246 0.203879247576448 6.01492313039413 6.01274998751497 2488084.985234261 0.0304043477971472 11.7376332479207 2.23163702779028 -42.9001428817573 4508203.69065527 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
2106-Dec-04 02:22 < 00:01 Earth 0.392291119737852 0.392290853904871 0.392291385571681 3.85303593333624 3.85127273893517 2490597.598750052 0.198444817756097 8.43224955238983 1.97695737728742 -31.3246043604025 5401725.01427116 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
2123-Apr-10 05:51 < 00:01 Earth 0.449703032432326 0.449702922628759 0.449703142237529 3.75372668129965 3.75214792451908 2496568.744016598 0.287431697141464 4.59446191805278 2.7627702121581 12.1047793387448 4851109.88313194 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
2130-Feb-14 22:11 < 00:01 Earth 0.278164846336841 0.278164467221707 0.278165225452202 6.03818733850116 6.03660076357226 2499071.424478253 0.0449284778457126 16.2267871278798 2.45417877106917 31.5320482579985 4348814.77822643 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
2137-Jan-25 14:12 < 00:01 Earth 0.149462339510461 0.149462303723686 0.149462375298272 5.81427975347711 5.81121285634545 2501608.091589428 0.0303210917471621 12.142456589281 2.09109418294173 -85.3778975043959 4928148.97179882 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
2144-Jan-03 10:26 < 00:01 Earth 0.296580112595509 0.296579681273709 0.296580543918125 5.79436212354546 5.79281144131015 2504141.934964892 0.0647767180223672 17.7566026192178 2.56838059803557 -30.5209214676983 4165171.92382641 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
2150-Nov-12 07:12 < 00:01 Earth 0.460944598406195 0.460944442335167 0.460944754481099 4.17449942026554 4.17311447928556 2506646.799860431 0.297280308773135 4.29474580360381 2.94652263736904 -17.0836188980393 5898171.87275805 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
2167-Mar-16 05:30 < 00:01 Earth 0.377434101088881 0.377433648824484 0.377434553353601 4.02625125558719 4.0244975166713 2512614.729380906 0.258228325034452 16.3445412133681 2.86912568163356 30.6814183032917 3556583.95800778 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
2174-Feb-03 01:31 < 00:01 Earth 0.188400619455076 0.18840019323347 0.188401045678425 6.00554805316722 6.00319266464048 2515130.562852684 0.0439943368206079 20.0521921593532 2.05389769574272 49.0340130014319 4932570.01538756 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
2181-Jan-17 20:55 < 00:01 Earth 0.198010515254549 0.198010031565547 0.1980109989451 5.98984177156369 5.9875948380871 2517671.371293144 0.0504944821269672 21.0432439024162 2.21764194074754 -45.6670867465031 4545065.69226934 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53
2187-Dec-06 23:28 < 00:01 Earth 0.387313427971235 0.387312938267146 0.387313917675577 3.98339092185021 3.98166352928297 2520185.477949229 0.317141275848521 15.322199847004 2.06148648508498 -33.5068729906291 5326714.48259555 T 421 CATAB v2.0c-linF95 2013-Apr-29 15:53:22 2013-Apr-29 15:53

Alternate Designations
 1898 DQ = 1956 PC 
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