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433 Eros (A898 PA)
Classification: Amor [NEO]          SPK-ID: 2000433
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 659 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2229939629815297 9.3892e-09  
a 1.458167237139272 1.5841e-10 au
q 1.133004746239758 1.3703e-08 au
i 10.83051307033141 1.1582e-06 deg
node 304.29913451978 3.578e-06 deg
peri 178.8689344298016 3.9813e-06 deg
M 23.04174776493414 1.4229e-06 deg
tp 2459159.335547045187
(2020-Nov-05.83554705)
2.5401e-06 TDB
period 643.1457897601551
1.76
1.048e-07
2.869e-10
d
yr
n .5597486693246532 9.1213e-11 deg/d
Q 1.783329728038786 1.9373e-10 au
  Orbit Determination Parameters
   # obs. used (total)      9130  
   # delay obs. used      4  
   # Doppler obs. used      2  
   data-arc span      46582 days (127.53 yr)  
   first obs. used      1893-10-29  
   last obs. used      2021-05-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .29796  
   source      ORB  
   producer      Giorgini  
   solution date      2021-May-24 17:55:05  

Additional Information
 Earth MOID = .148573 au 
 Jupiter MOID = 3.28582 au 
 T_jup = 4.582 
[ hide covariance matrix ]
Orbital Elements at Epoch 2453311.5 (2004-Nov-02.0) TDB
Reference: JPL 659 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2228078944584026 9.3941e-09  
q 1.133355399799004 1.3693e-08 au
tp 2453371.585994305078
(2005-Jan-01.08599431)
2.4307e-06 TDB
node 304.4010273379536 3.5777e-06 deg
peri 178.665326776373 3.9814e-06 deg
i 10.8291838260782 1.158e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      9130  
   # delay obs. used      4  
   # Doppler obs. used      2  
   data-arc span      46582 days (127.53 yr)  
   first obs. used      1893-10-29  
   last obs. used      2021-05-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .29796  
   source      ORB  
   producer      Giorgini  
   solution date      2021-May-24 17:55:05  

Additional Information
 Jupiter MOID = 3.28582 au 
 T_jup = 4.582 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.824897647883053E-17 -1.286249686153524E-16 -1.03588387516801E-14 5.219788887355906E-15 -8.247228185245455E-15 1.966820496039695E-15
q -1.286249686153524E-16 1.874884876616508E-16 1.505718481624539E-14 -7.636686566714949E-15 1.204979983770343E-14 -2.876729016645992E-15
tp -1.03588387516801E-14 1.505718481624539E-14 5.908121798382239E-12 -1.020773456988E-12 4.865456051586345E-12 2.293673208497187E-13
node 5.219788887355906E-15 -7.636686566714949E-15 -1.020773456988E-12 1.279961172216178E-11 -1.276321539713635E-11 1.468926613657468E-12
peri -8.247228185245455E-15 1.204979983770343E-14 4.865456051586345E-12 -1.276321539713635E-11 1.585123532617213E-11 -1.04044788328586E-12
i 1.966820496039695E-15 -2.876729016645992E-15 2.293673208497187E-13 1.468926613657468E-12 -1.04044788328586E-12 1.340858225930575E-12

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.42   n/a MPCxxxxx  
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. 2020-October); 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 Bull. 41, 286-300.]
[Warner, B.D. (2017) Minor Planet Bull. 44, 22-36.]
[Aznar, A.M.; Predatu, M.; Vaduvescu, O.; Oey, J. (2018) arXiv:1801.09420. Romanian J. Phys. 62, 904 (2017).]
[Hasegawa, S.; Kuroda, D.; Kitazato, K.; Kasuga, T.; et al. (2018) Pub. Astron. Soc. Japan 70, A114.]
[Skiff, B.A.; McLelland, K.P.; Sanborn, J.J.; Pravec, P.; Koehn, B.W. (2019) Minor Plantet Bull. 46, 238-265.]
[Warner, B.D.; Stephens, R.D. (2019) Minor Planet Bull. 46, 27-40.]
geometric albedo albedo 0.25   0.06 Veverka et al. (2000) Science v.289,pp.2088-2097 average
B-V BV 0.921   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=48; phase (min.=8.73, mean=34.88, max.=57.19) deg.
U-B UB 0.531   0.027 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #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 (A898 PA)          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 0.314929169289996 0.314928923267226 0.314929415312767 5.5786191874778 5.57710237532794 2415380.562333163 0.0994025650685766 12.546604351613 6.48996203123014 14.0006084143853 6384345.40863558 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
1907-Nov-05 03:31 < 00:01 Earth 0.471485542509054 0.471485401562672 0.471485683455676 4.39449088848241 4.39320471672985 2417884.646249309 0.0575299826517495 20.516307542635 3.45272921344412 72.4106352623054 8984847.26045789 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
1917-Apr-20 21:19 < 00:01 Earth 0.499257206013628 0.499257079339193 0.499257332688063 4.81678401839605 4.81567591368985 2421339.388440825 0.0490114496017461 6.71250640567991 3.37608996679433 23.233859743091 4221822.61957817 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
1924-Mar-05 22:13 < 00:01 Earth 0.359786488863315 0.359786298051029 0.359786679675888 4.59605488548972 4.59444328107062 2423850.425645988 0.0950574158558215 22.6783618554585 5.87026848934289 -69.9661883528132 8154365.36278476 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
1931-Jan-30 04:07 < 00:01 Earth 0.174073145828143 0.174073021249871 0.174073270408642 5.92081853410288 5.91823274159338 2426371.671249267 0.0243434681520975 33.2017934479721 1.91059474297566 79.7280785595233 10314273.9736747 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
1938-Jan-13 22:04 < 00:01 Earth 0.215005240475579 0.215005076461601 0.21500540448963 6.08405240457237 6.08201516040514 2428912.419571612 0.0339031084824333 10.9262074745986 3.60386480611989 -44.6229755468341 6238557.13269277 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
1944-Nov-27 01:41 < 00:01 Earth 0.403009056102249 0.403008928335766 0.40300918387006 3.62609863601348 3.6242748781955 2431421.569960210 0.0656686444463447 45.1541961679937 3.66257401505802 83.3423997703861 8630222.03694672 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
1961-Apr-04 09:08 < 00:01 Earth 0.442492130055115 0.44249203303915 0.442492227071079 3.70783644822376 3.70621209162704 2437393.880411018 0.0427757811178095 5.13899237134778 4.68241987620462 55.6544305223326 6212180.47824086 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
1968-Feb-11 13:46 < 00:01 Earth 0.266271405678683 0.266271300259335 0.266271511098106 6.06688497246724 6.06523536310715 2439898.073437894 0.0275121688089018 12.0790248751394 4.1471038984357 73.4558969501785 8324206.19713926 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
1975-Jan-23 07:39 < 00:01 Earth 0.151134190879819 0.151134141782744 0.151134239976902 5.82530768329976 5.82228046582781 2442435.819062972 0.0137832016517016 7.12081840029223 2.3112444234784 -83.0987951602347 8474748.00293844 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
1981-Dec-29 08:05 < 00:01 Earth 0.308489327084792 0.308489254148293 0.308489400021309 5.66527184593152 5.66374705637808 2444967.836516459 0.0409835167022798 6.33625560136424 3.51690143078465 79.8165410942214 7542206.87976979 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
1988-Nov-06 14:56 < 00:01 Earth 0.467640207739125 0.467640159804796 0.467640255673454 4.30590213802903 4.30457870154467 2447472.122255357 0.0167168943129989 8.35189368681557 2.38419581322683 -88.9259325057957 14639920.8334207 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
2005-Mar-08 22:07 < 00:01 Earth 0.365567222220881 0.365567163591694 0.365567280850068 4.41229239532107 4.41064019712927 2453438.421527583 0.0275582204891035 11.11492323373 2.68269152124433 83.831051106034 11894011.7795043 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
2012-Jan-31 11:01 < 00:01 Earth 0.17867581359062 0.178675792496712 0.178675834684529 5.9451959020589 5.94268706727029 2455957.958753891 0.00917733697796505 9.47290829263319 1.04998282195043 89.5989746692284 11176312.5703243 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
2019-Jan-15 06:01 < 00:01 Earth 0.208598687128401 0.208598631260003 0.20859874299681 6.04491761845287 6.04280419596072 2458498.750796298 0.0209469488378522 3.57045626549085 2.03819850733818 49.5886260870178 9335079.98045553 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
2025-Nov-30 02:18 < 00:01 Earth 0.397647474377339 0.397647431258304 0.397647517496374 3.72885086766854 3.72705347156126 2461009.595505527 0.0250121879739454 20.8466160091239 2.14462361331872 -89.656728933703 10652310.5104753 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
2042-Apr-06 19:02 < 00:01 Earth 0.446141725417902 0.446141647415099 0.446141803420705 3.72522472053313 3.72362117786559 2466981.292710480 0.0300283055337796 5.1025743035008 2.95272095641618 52.6382818471183 7969617.4054994 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
2049-Feb-12 05:38 < 00:01 Earth 0.27255533888761 0.272555246584116 0.272555431191151 6.05906458557686 6.05745093344503 2469484.734531962 0.0245884325916635 11.6241259872158 3.67488713086812 75.4494054844886 8278344.59063802 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
2056-Jan-24 11:03 < 00:01 Earth 0.149782176486572 0.149782128520116 0.149782224453053 5.8207578574117 5.8177009186216 2472021.960376792 0.0155187842878198 9.03853239242831 2.22530980401035 -84.2420280542159 8757607.50505464 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
2062-Dec-31 08:25 < 00:01 Earth 0.30295352319857 0.302953400342305 0.302953646054835 5.73224348251893 5.73070897205617 2474554.850436383 0.0536360159972097 6.53108127849121 5.47864266445848 39.3921651714044 7402106.88602264 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
2069-Nov-08 21:29 < 00:01 Earth 0.46472821852281 0.464728130612638 0.46472830643306 4.24541768506892 4.24406697548721 2477059.395051558 0.0362816367375827 15.7861222025568 3.2161572062651 78.9153600270878 10015081.42348 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
2086-Mar-11 22:55 < 00:01 Earth 0.37131002710479 0.371309857235552 0.371310196974323 4.22586437687954 4.22416594783656 2483026.454691576 0.0884623802783603 22.7623050482512 5.43703107782765 -72.8650593815771 7942447.13507921 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
2093-Jan-31 15:47 < 00:01 Earth 0.182463884248595 0.182463741490261 0.18246402700921 5.97491362207991 5.97246910733982 2485544.157501873 0.0264434502081497 34.6252452201644 2.20111323133223 78.7032313892381 9315245.60283076 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
2100-Jan-16 11:39 < 00:01 Earth 0.203879117508462 0.203878926980372 0.203879308036715 6.01491966325643 6.01274652057686 2488084.985205842 0.0385219169702691 13.5671869634202 3.51779231444383 -47.6596187661959 6296908.70340105 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
2106-Dec-04 02:22 < 00:01 Earth 0.392291254232579 0.392291071008489 0.392291437459055 3.85303051414108 3.85126731785219 2490597.598660272 0.0981877158724078 54.2246053259846 3.90236080910792 81.2006001747679 8387471.23132289 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
2123-Apr-10 05:51 < 00:01 Earth 0.449702837838684 0.449702662288294 0.449703013389074 3.75372432540533 3.75214556693995 2496568.743990907 0.0777891268834662 8.7508240071516 4.2715514778847 3.15715515261734 2909956.77611282 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
2130-Feb-14 22:11 < 00:01 Earth 0.278164572368257 0.27816430511583 0.278164839620796 6.03818492824627 6.03659835111075 2499071.424442463 0.0669664947733953 17.0994896138755 7.62193924113481 44.4147109194667 5450127.6451315 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
2137-Jan-25 14:12 < 00:01 Earth 0.149462309364138 0.14946225882911 0.149462359899642 5.81427597029834 5.81120907053142 2501608.091568441 0.0311115500511001 25.7317597098594 2.15357019780048 -87.0717276658485 9032071.80835265 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
2144-Jan-03 10:26 < 00:01 Earth 0.296580392971077 0.296580092791255 0.2965806931509 5.79435384728246 5.79280316428776 2504141.934880537 0.0988523046231266 15.0547702722641 5.67082936688825 -6.42853070498154 5305064.78015153 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
2150-Nov-12 07:12 < 00:01 Earth 0.460944758270527 0.460944559762634 0.460944956779415 4.17450359138508 4.17311865226079 2506646.799789587 0.0846898303373169 37.3997286178779 3.5248010155851 75.6361959904414 9088898.28460022 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
2167-Mar-16 05:30 < 00:01 Earth 0.377433742801271 0.377433416032871 0.377434069571387 4.02625360097306 4.02449986140269 2512614.729294255 0.179431495753709 45.6697238571581 5.45085458033026 -70.1590909589546 7616780.07617235 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
2174-Feb-03 01:30 < 00:01 Earth 0.188400269234555 0.188399969606977 0.188400568870068 6.00554317134228 6.0031877765055 2515130.562818814 0.0516734807192184 63.6422187062906 2.5315439760887 76.6125954004678 8708309.05886827 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
2181-Jan-17 20:55 < 00:01 Earth 0.198010812531038 0.198010471286677 0.198011153776187 5.98983892940427 5.98759199822052 2517671.371248318 0.0623218302317435 26.2754779589096 3.45040240091177 -50.2327004138586 6264081.09578971 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55
2187-Dec-06 23:28 < 00:01 Earth 0.387313730881219 0.387313388308941 0.387314073460147 3.9833820614279 3.98165466635673 2520185.477801318 0.178628214525345 84.332075816861 4.24743085625471 78.6539675716676 8127613.44156363 T 659 CATAB v2.0g-lin.ifort 2021-May-24 18:55:05 2021-May-24 18:55

Alternate Designations
 A898 PA = 1956 PC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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