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1866 Sisyphus (1972 XA)
Classification: Apollo [NEO]          SPK-ID: 2001866
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 357 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5382990805276183 3.9326e-08  
a 1.893913502884874 2.5156e-09 AU
q .8744216056831053 7.4572e-08 AU
i 41.18736900078213 5.2281e-06 deg
node 63.55627227555064 7.3285e-06 deg
peri 293.0560887779469 7.2127e-06 deg
M 67.67116290989433 5.9815e-06 deg
tp 2456821.546673190631
(2014-Jun-13.04667319)
1.5607e-05 JED
period 952.0037026281615
2.61
1.8968e-06
5.193e-09
d
yr
n .3781497897604403 7.5342e-10 deg/d
Q 2.913405400086642 3.8698e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      2505  
   # delay obs. used      0  
   # Doppler obs. used      1  
   data-arc span      22031 days (60.32 yr)  
   first obs. used      1955-01-26  
   last obs. used      2015-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .46332  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-May-24 06:14:40  

Additional Information
 Earth MOID = .104032 AU 
 T_jup = 3.513 
[ 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 12.4 mag n/a MPO267714  
diameter diameter 8.48 km n/a Delbo et al. (2003). Icarus, v. 166, pp. 116-130  
rotation period rot_per 2.400 h n/a LCDB (Rev. 2015-May); Warner et al., 2009 Published Reference List:
[Schober, H.J.; Erikson, A.; Hahn, G.; Lagerkvist, C.-I. (1993) Astron. Astrophys. Suppl. Ser.; 101, 499-505.]
[Pravec, P.; Wolf, M.; Sarounova, L. (1998) http://www.asu.cas.cz/~ppravec/neo.htm]
[Stephens, R.D.; French, L.M.; Warner, Brian D.; Wasserman, L. (2011) Minor Planet Bul. 38, 212-213.]
[Behrend, R. (2015) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.15   n/a Delbo et al. (2003). Icarus, v. 166, pp. 116-130  
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)

1866 Sisyphus (1972 XA)          Discovered 1972-Dec-05 by Wild, P. at Zimmerwald
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
1912-Dec-09 05:41 < 00:01 Earth 0.451135645252844 0.451131750601501 0.451139539904288 33.8145829290906 33.8144082655336 2419745.736806286 0.0677880248287449 192.390393716542 11.2635870846536 9.43304947823896 988364.041407555 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
1920-Jun-12 20:58 < 00:01 Earth 0.444885941166474 0.44488512786087 0.444886754497154 24.6626614830046 24.662418639847 2422488.373384719 0.0315494877920217 164.35913666337 12.2908443551138 75.4181540560623 4776070.07516963 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
1933-Jun-15 06:28 < 00:01 Earth 0.442506776524414 0.442506310734509 0.442507242329753 22.2803758386253 22.2801055843628 2427238.769791323 0.0175203113324485 133.321105142784 11.6775217411862 -84.8330834176226 5049136.35939428 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
1946-Jun-16 00:15 < 00:01 Earth 0.491536404565584 0.491535413641654 0.491537395499623 20.6950318455333 20.6947699106632 2431987.510451436 0.0139178640474287 104.610852936219 11.160783677963 -68.8280062973013 5413525.36579615 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
1946-Nov-12 05:36 < 00:01 Earth 0.350649512547841 0.350647078732283 0.350651946365069 21.6421028332021 21.6417517232142 2432136.732988555 0.0309448288759841 109.325047560178 12.4834810845514 -14.3268746027017 1012202.00774915 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
1959-Nov-17 08:31 < 00:01 Earth 0.197423451276166 0.197421848907829 0.197425053648935 23.0737666820641 23.0731817564699 2436889.855020928 0.0296511808665446 81.2764339770278 12.0753008066063 -29.9002818516126 1133457.33454484 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
1972-Nov-21 21:30 < 00:01 Earth 0.102883772060138 0.102883490123952 0.10288405399773 25.154508046723 25.1534784704204 2441643.395930725 0.0207063612655601 49.3140831319222 11.8154130898188 -84.7401862424348 1185774.48851476 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
1985-Nov-27 21:43 < 00:01 Earth 0.183071219927743 0.183070598617037 0.183071841239073 27.8281400722796 27.8276170596435 2446397.404954836 0.0153926648269357 34.2919684049795 11.5661418024583 33.7833920145238 1368373.72433379 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
1998-Dec-04 16:31 < 00:01 Earth 0.337946596947375 0.33794612329941 0.337947070595393 31.1800911387938 31.1798382738295 2451152.188299665 0.0113246410914909 23.6659867915756 11.2843216384093 18.5581290146452 2331927.34872207 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
2006-Jun-10 20:04 < 00:01 Earth 0.494839247756247 0.494838834577768 0.494839660934924 26.8141060647201 26.8139052541718 2453897.336184293 0.0105946170867661 31.7253630844328 12.758227628095 58.7934978873974 4716311.29675655 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
2019-Jun-14 06:02 < 00:01 Earth 0.450374045673949 0.450373745374962 0.450374345972962 23.998338482134 23.9980919576502 2458648.751707385 0.0121081380171411 39.2558570692107 12.3869040892963 79.5645756165498 4859424.56393849 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
2032-Jun-15 03:21 < 00:01 Earth 0.458463398236478 0.458463036935169 0.458463759538742 21.8763567556909 21.8760910900882 2463398.639429955 0.0128343058399523 52.2195645295615 11.9010187805595 -80.435239131246 5066998.05664628 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
2032-Nov-08 20:12 < 00:01 Earth 0.469431936285599 0.469430718989514 0.469433153581898 21.1484097223522 21.1481413333197 2463545.341932095 0.0132787266055416 54.074455615127 12.7315632173034 -11.8776416462085 1507308.5488406 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
2045-Nov-13 05:48 < 00:01 Earth 0.303696081374927 0.303694498200812 0.303697664550235 22.0426805198415 22.0422824927039 2468297.741813877 0.022049894838247 72.9420246451329 12.2340231287363 -18.9116755717404 1195512.52538089 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
2058-Nov-18 16:40 < 00:01 Earth 0.153292800350735 0.153291286757817 0.153294313955832 23.7672021850919 23.7664708452729 2473051.194639129 0.0325878537912431 90.9132570145238 11.8911070698872 -42.7717479234575 1197048.51930391 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
2071-Nov-24 07:51 < 00:01 Earth 0.115812421718817 0.115811375210481 0.115813468265796 26.0224096886425 26.0215255566997 2477804.827173282 0.0419459111747025 111.71463321945 11.637369891023 64.6401368025263 1237672.96915339 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
2084-Nov-29 15:54 < 00:01 Earth 0.240126412902268 0.240123607399693 0.240129218410636 28.9689778919727 28.9685948537423 2482559.162690686 0.0536758827697193 145.858259300768 11.427563407901 24.1207842553133 1216653.22584255 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
2097-Dec-06 16:54 < 00:01 Earth 0.405201059477491 0.405197655769998 0.405204463185549 32.5562495640737 32.5560475838901 2487314.203957573 0.0586387753554281 168.667372816502 11.1882520094992 12.0950833663888 1123809.59236199 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
2105-Jun-12 18:59 < 00:01 Earth 0.484562168242302 0.484560979453691 0.484563357052633 25.8272605919677 25.8270476867532 2490058.291299464 0.0342639588457765 164.17047942231 12.6900400824672 68.6663714430959 4887306.06886223 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
2118-Jun-15 18:08 < 00:01 Earth 0.456948459640223 0.456948223904228 0.45694869537301 23.1616539403286 23.1614021854294 2494809.255550303 0.0250049917208624 176.336095906374 12.171489694364 87.6220543155158 5056188.44265589 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
2131-Jun-17 00:30 < 00:01 Earth 0.481826072128253 0.481824800613953 0.481827343675531 21.3354303352773 21.3351711422636 2499558.521118461 0.0135423338159883 182.429790121687 11.7246881962967 -75.0471721389402 5264998.49258651 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
2131-Nov-12 06:41 < 00:01 Earth 0.392342095649094 0.392337618393625 0.392346572909442 21.511902366558 21.5115866685672 2499706.778414054 0.0468709047259341 201.136744833931 12.4407808590254 -14.0538943927304 1047374.08082049 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
2144-Nov-16 04:47 < 00:01 Earth 0.229992947774764 0.229988640614814 0.229997254958396 22.7669166642108 22.7664078040243 2504459.699586125 0.0689745448229967 213.052285638428 11.9752887568377 -27.2150239258088 1186701.57033659 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
2157-Nov-21 17:04 < 00:01 Earth 0.114555415176043 0.114553845947521 0.114556984590386 24.7413858094007 24.7404456944428 2509213.211419584 0.0815137806084994 222.798291868819 11.6658526615275 -72.1220034955498 1274417.98963101 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
2170-Nov-27 11:23 < 00:01 Earth 0.164489724516932 0.1644851767311 0.164494272389606 27.2477615307317 27.2471670367102 2513966.974590846 0.103573761891429 278.058841690918 11.4601279023313 39.8695426891041 1275041.77566049 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
2183-Dec-04 06:30 < 00:01 Earth 0.319808154289739 0.319801890779251 0.319814417809127 30.5733615783931 30.5730890689434 2518721.770786939 0.112580177492456 314.853242400812 11.2443573653117 17.3910949633467 1202024.85341539 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
2196-Dec-10 09:55 < 00:01 Earth 0.488626877352661 0.488620114204726 0.488633640500998 34.3162167618448 34.3160578571942 2523476.912903019 0.111915750018483 334.792079825292 11.0260860369259 9.4565292819625 1055462.48626409 T 357 CATAB v2.0c-linF95 2015-May-24 06:15:01 2015-May-24 06:15
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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