+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   2608 Seneca (1978 DA) Classification: Amor [NEO]          SPK-ID: 2002608 [ 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 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5709492132418454 2.287e-07   a 2.517061390309602 1.312e-07 AU q 1.079947169830909 5.6005e-07 AU i 14.67604146526249 5.1211e-05 deg node 167.3800648305269 2.8686e-05 deg peri 37.30101974545448 0.00011258 deg M 318.0832921848664 0.0002318 deg tp 2456570.333673470583 (2013-Oct-04.83367347) 0.00094974 JED period 1458.609839280741 3.99 0.00011404 3.122e-07 d yr n .2468103466088784 1.9297e-08 deg/d Q 3.954175610788296 2.0611e-07 AU   Orbit Determination Parameters    # obs. used (total)      52      data-arc span      11871 days (32.50 yr)      first obs. used      1978-02-17      last obs. used      2010-08-19      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      1      fit RMS      .88789      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 15:43:16   Additional Information  Earth MOID = .132614 AU   T_jup = 3.172  [ 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 17.52 mag n/a PDS3 (MPC 17266)   diameter diameter 0.9 km n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543   rotation period rot_per 8. h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Degewij, J. (1978) Messenger 13, 5; IAUC 3193.] geometric albedo albedo 0.21   n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543   B-V BV .826 mag .020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=4; phase (min.=22.10, mean=23.28, max.=26.12) deg. U-B UB .454 mag .052 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=4; phase (min.=22.22, mean=23.41, max.=26.12) deg. Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices 2608 Seneca (1978 DA)          Discovered 1978-Feb-17 by Schuster, H.-E. at La Silla (809) Reference: DISCOVERY.DB Last 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 1905-Mar-01 00:32 < 00:01 Earth 0.172272169112855 0.172243605989869 0.172300731835312 17.1347846419788 17.1338819698751 2416905.522080134 0.862862325993384 1276.03216859982 33.1148980839179 -2.80498287990881 35959.2097304163 T 12 CATAB v2.0c-linF95 2013-Apr-29 15:43:16 2013-Apr-29 15:43 1928-Feb-14 14:01 < 00:01 Earth 0.418373954946261 0.418339754838137 0.418408154964626 23.6532115771836 23.6529423244825 2425291.083700045 0.63547594590013 1671.25366242447 24.1442874084698 3.70575324140227 155032.075347967 T 12 CATAB v2.0c-linF95 2013-Apr-29 15:43:16 2013-Apr-29 15:43 1947-Jun-05 00:52 < 00:01 Earth 0.419763023367913 0.419736938497268 0.419789109585994 18.5712309580674 18.5708891585224 2432341.535849095 0.807705017893259 1651.83519779384 100.852123024653 -36.003898360194 314900.972772021 T 12 CATAB v2.0c-linF95 2013-Apr-29 15:43:16 2013-Apr-29 15:43 1951-Feb-11 20:15 < 00:01 Earth 0.487139375154625 0.487107165999354 0.487171584272761 25.2269877810039 25.2267709628768 2433689.343977784 0.533483041772734 1590.12437051759 21.8124981588412 3.5053280356311 191196.0879751 T 12 CATAB v2.0c-linF95 2013-Apr-29 15:43:16 2013-Apr-29 15:43 1974-Jun-05 09:30 < 00:01 Earth 0.475772401462655 0.47576524761967 0.475779555361647 19.6573468505096 19.6570619512278 2442203.896116245 0.105828523820214 426.532072462774 109.955231619573 -32.4317175893138 325854.42607845 T 12 CATAB v2.0c-linF95 2013-Apr-29 15:43:16 2013-Apr-29 15:43 1975-Dec-15 17:43 < 00:01 Jupiter 1.57484233949652 1.57482834376024 1.5748563352095 7.22544338070155 7.15061816879062 2442762.238176888 0.480298980153171 153.019245122374 27.6794771846841 26.4665639526068 484561.356763722 T 12 CATAB v2.0c-linF95 2013-Apr-29 15:43:16 2013-Apr-29 15:43 1978-Mar-15 10:10 < 00:01 Earth 0.0900389845131411 0.0900379294235648 0.0900400396013841 13.1504513625104 13.148200866386 2443582.923857646 0.0551030120976305 43.0824421563171 14.5410939968918 7.63344208185098 254181.696833485 T 12 CATAB v2.0c-linF95 2013-Apr-29 15:43:16 2013-Apr-29 15:43 1987-Sep-27 05:26 < 00:01 Jupiter 1.33171540870146 1.33170833842546 1.33172247900481 6.19075734551725 6.08715032774845 2447065.726208315 0.820895392220174 72.3251752284458 31.028197018231 43.1657565781649 498206.67794697 T 12 CATAB v2.0c-linF95 2013-Apr-29 15:43:16 2013-Apr-29 15:43 1999-Jul-29 18:25 00:01 Jupiter 1.25571573576465 1.25571192829132 1.25571954322094 5.80479274969299 5.68740288169472 2451389.267209552 1.34786341128046 45.5266143653302 36.1278467398343 50.8517426189992 464726.049144989 T 12 CATAB v2.0c-linF95 2013-Apr-29 15:43:16 2013-Apr-29 15:43 2011-Jun-19 18:13 00:02 Jupiter 1.2916655483199 1.29166095536226 1.29167014127218 5.88827369821988 5.77583303461309 2455732.259222814 1.71421081801747 64.1078600101451 37.9240348465835 22.6941824120979 334282.013235516 T 12 CATAB v2.0c-linF95 2013-Apr-29 15:43:16 2013-Apr-29 15:43 2023-Jun-02 06:04 00:02 Jupiter 1.46808026135408 1.46807106926865 1.46808945346442 6.49735523445633 6.40794089196482 2460097.752646488 1.88403559215912 132.816868210397 39.2757408027851 18.3323876856996 254739.160156831 T 12 CATAB v2.0c-linF95 2013-Apr-29 15:43:16 2013-Apr-29 15:43 2035-Jun-09 02:12 00:02 Jupiter 1.86108138947002 1.86106515674588 1.86109762216504 7.86694648252068 7.80887951302871 2464487.591323751 1.74594541193327 269.169980780744 42.3160698431857 12.7036525356978 230030.601441796 T 12 CATAB v2.0c-linF95 2013-Apr-29 15:43:16 2013-Apr-29 15:43 2062-Mar-22 11:05 00:02 Earth 0.254886490632842 0.25482270598597 0.254950288115414 12.1576242437898 12.1567643750154 2474270.962149560 1.76627126224085 3641.79451525194 36.8862642027037 -39.4541516157758 484136.637122771 T 12 CATAB v2.0c-linF95 2013-Apr-29 15:43:16 2013-Apr-29 15:43 2066-Apr-13 04:37 < 00:01 Earth 0.444035128917461 0.443948009542344 0.444122244574202 10.2223948587938 10.2218078361667 2475753.692269251 0.989110388985354 3740.2621355526 42.9816216149283 2.59497806008323 48654.1438001056 T 12 CATAB v2.0c-linF95 2013-Apr-29 15:43:16 2013-Apr-29 15:43 2111-Mar-20 22:14 00:01 Earth 0.276561485387708 0.276507127231952 0.276615847658478 13.2382202617756 13.2374924769601 2492165.426397249 1.29583927559205 2856.66410881267 38.7083504098846 -32.0298809747843 433630.400274435 T 12 CATAB v2.0c-linF95 2013-Apr-29 15:43:16 2013-Apr-29 15:43 2115-Apr-10 08:18 00:01 Earth 0.334959984550448 0.334904554224798 0.335015413349654 8.88793764672867 8.88704261115943 2493646.845592752 1.47447221399297 2053.20994945694 36.4200621199827 12.4604730085409 185537.88713898 T 12 CATAB v2.0c-linF95 2013-Apr-29 15:43:16 2013-Apr-29 15:43 2129-Aug-31 00:31 00:01 Jupiter 1.90958903854085 1.90958213794682 1.90959593914945 6.75183286046812 6.68581494704088 2498903.521186267 1.24741079281346 107.187633024101 20.5318789518403 -15.5984111365462 509154.353115844 T 12 CATAB v2.0c-linF95 2013-Apr-29 15:43:16 2013-Apr-29 15:43 2141-Aug-20 01:01 00:02 Jupiter 1.51467877141491 1.51467193637759 1.51468560644651 5.40626352011139 5.30181728675947 2503275.542242813 1.5873027564029 67.0888966170798 17.9483343921084 -18.7803907525351 465211.552735132 T 12 CATAB v2.0c-linF95 2013-Apr-29 15:43:16 2013-Apr-29 15:43 2153-Jul-27 01:33 00:02 Jupiter 1.34998698064827 1.34997760464042 1.3499963566051 4.94293944888528 4.81433173883897 2507634.564630171 1.76217158709724 75.3701501081634 16.7176699053451 -15.7695156611474 342543.320663263 T 12 CATAB v2.0c-linF95 2013-Apr-29 15:43:16 2013-Apr-29 15:43 2165-Jun-20 13:43 00:02 Jupiter 1.33454619996446 1.33453219506961 1.33456020472907 4.92794063094733 4.79741802935373 2511981.071471231 1.7286621214924 112.515184278781 17.5720377754872 -12.1663773228317 240970.439577147 T 12 CATAB v2.0c-linF95 2013-Apr-29 15:43:16 2013-Apr-29 15:43 2175-May-24 02:43 00:04 Earth 0.30642716766957 0.306361753713962 0.306492595675095 12.9858959581953 12.9852263444417 2515605.613177855 3.97771155890352 4095.85710740323 90.384781703368 -36.2353927241264 227549.505603062 T 12 CATAB v2.0c-linF95 2013-Apr-29 15:43:16 2013-Apr-29 15:43 2177-May-02 02:05 00:02 Jupiter 1.42263592301857 1.42261209140196 1.42265975423681 5.2627768605865 5.14840181226004 2516314.587029745 1.53629766786573 222.223979311304 23.28854178106 -3.46380444414606 95828.3352023279 T 12 CATAB v2.0c-linF95 2013-Apr-29 15:43:16 2013-Apr-29 15:43 2179-Mar-14 11:16 00:04 Earth 0.0984364084509175 0.0983826008074602 0.0984902990763778 13.2558306735323 13.2537885448724 2516995.969136621 4.3499615701758 4220.48560527084 23.0740975345257 -56.9449152235475 409211.612619493 T 12 CATAB v2.0c-linF95 2013-Apr-29 15:43:16 2013-Apr-29 15:43 2189-Feb-26 15:03 00:01 Jupiter 1.67608426560157 1.67603747043034 1.67613105965134 6.28823810708195 6.2073522985388 2520633.127280081 1.44603129569857 562.961369910495 33.2499080634705 3.80759632507053 68833.1859534164 T 12 CATAB v2.0c-linF95 2013-Apr-29 15:43:16 2013-Apr-29 15:43 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2013-May-21 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