Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 332 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .538299088113266 4.0301e-08  
a 1.893913502571675 2.5404e-09 AU
q .8744215911719405 7.6445e-08 AU
i 41.18736776391205 5.5866e-06 deg
node 63.55627326616665 7.4087e-06 deg
peri 293.0560887232588 7.3271e-06 deg
M 67.67116323296673 6.0504e-06 deg
tp 2456821.546672380671
(2014-Jun-13.04667238)
1.5789e-05 JED
period 952.0037023920102
2.61
1.9155e-06
5.244e-09
d
yr
n .3781497898542431 7.6086e-10 deg/d
Q 2.913405413971409 3.908e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      2386  
   # delay obs. used      0  
   # Doppler obs. used      1  
   data-arc span      21897 days (59.95 yr)  
   first obs. used      1955-01-26  
   last obs. used      2015-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4662  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-18 05:17:43  

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 Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) 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.]
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 (026)
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 0.451135828415846 0.451131903971903 0.451139752859841 33.8145871744837 33.8144125110195 2419745.736815264 0.0685871276986144 193.899555444991 11.4527096340865 9.4900734268752 978161.525777742 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
1920-Jun-12 20:58 < 00:01 Earth 0.444885881340114 0.444885054685544 0.444886708020111 24.6626578844876 24.662415041262 2422488.373389919 0.0321536767620933 166.263973105792 12.6312682110031 75.3733947795191 4646438.09995151 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
1933-Jun-15 06:29 < 00:01 Earth 0.442506783369929 0.442506313229367 0.442507253524449 22.2803734255743 22.2801031712868 2427238.769794302 0.0181272525959312 134.924708680312 11.934635747421 -84.8721883363396 4940664.64282588 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
1946-Jun-16 00:15 < 00:01 Earth 0.491536448311683 0.491535445947893 0.491537450685603 20.6950302946713 20.6947683598049 2431987.510453118 0.0144312861613931 105.939178162875 11.3521251434778 -68.8497595662279 5323092.07151837 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
1946-Nov-12 05:36 < 00:01 Earth 0.35064940501098 0.350646953076891 0.350651856946773 21.6421030290354 21.641751918943 2432136.732992218 0.0311567991685353 110.057008087162 12.9663302426282 -14.1579005310728 970543.728496652 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
1959-Nov-17 08:31 < 00:01 Earth 0.197423381137042 0.197421765940963 0.197424996337546 23.0737670691869 23.0731821433947 2436889.855024154 0.0299287989660511 81.7524342779708 12.4949642479486 -29.6994415548544 1091276.31606015 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
1972-Nov-21 21:30 < 00:01 Earth 0.10288375548217 0.10288346436614 0.102884046599795 25.1545082234042 25.1534786469429 2441643.395932899 0.0209735215857883 49.5028749391292 12.1697798169427 -84.4736501926375 1150786.13312214 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
1985-Nov-27 21:43 < 00:01 Earth 0.183071218255429 0.183070596894178 0.183071839617244 27.8281399471594 27.8276169345162 2446397.404956134 0.0156298488205976 34.3223124325842 11.8574558343229 33.9860858259021 1346321.37700651 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
1998-Dec-04 16:31 < 00:01 Earth 0.337946574834075 0.337946097537107 0.337947052131057 31.1800906018706 31.1798377368853 2451152.188300474 0.011524934142047 23.8044941281975 11.5331872112044 18.2325436032682 2296610.62507295 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
2006-Jun-10 20:04 < 00:01 Earth 0.494839227533832 0.49483880886418 0.494839646203766 26.8141059462638 26.8139051357064 2453897.336184971 0.0109767518897915 32.0337570549129 13.1972294766239 59.0475535911575 4575296.74128573 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
2019-Jun-14 06:02 < 00:01 Earth 0.450374028359387 0.450373723008825 0.450374333710549 23.9983384773699 23.9980919528766 2458648.751708389 0.0125259656068297 39.515348911306 12.728515436067 79.8361798465315 4732981.52304058 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
2032-Jun-15 03:21 < 00:01 Earth 0.458463374770514 0.458463006731677 0.458463742810678 21.8763568099419 21.8760911443262 2463398.639430934 0.0133348134434854 52.5608165386429 12.1485671277334 -80.2495311513626 4961265.99235818 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
2032-Nov-08 20:12 < 00:01 Earth 0.469432009771017 0.469430772630699 0.469433246911568 21.1484089795248 21.1481405905249 2463545.341930193 0.0134875663447392 55.0387088953387 13.2170949144804 -12.3626063785225 1492551.25140191 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
2045-Nov-13 05:48 < 00:01 Earth 0.303696165634673 0.303694560174467 0.303697771096141 22.0426793561426 22.0422813290944 2468297.741812236 0.022325639058334 74.0935744390497 12.685632365778 -19.2291983525301 1172191.20571304 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
2058-Nov-18 16:40 < 00:01 Earth 0.153292867771754 0.153291337037474 0.153294398518644 23.7672004976867 23.7664691581374 2473051.194636506 0.0329218762884206 92.239123042744 12.2877239666099 -42.9985593697194 1163601.02530933 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
2071-Nov-24 07:51 < 00:01 Earth 0.115812360549882 0.115811292380065 0.115813428759276 26.0224075145665 26.0215233820828 2477804.827170423 0.0423426908341499 113.285595441418 11.9676935234027 64.4746158069618 1201921.46093606 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
2084-Nov-29 15:54 < 00:01 Earth 0.240126283953049 0.240123438534794 0.24012912937719 28.9689750660291 28.9685920275556 2482559.162687039 0.0541696733480935 147.800630386224 11.6956489872779 24.0099626542422 1184166.32267746 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
2097-Dec-06 16:54 < 00:01 Earth 0.405200917437448 0.405197469062852 0.405204365812604 32.5562463227498 32.5560443424752 2487314.203953290 0.0591595867975587 170.822394880005 11.3993261655689 12.0116453134978 1096774.21803761 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
2105-Jun-12 18:59 < 00:01 Earth 0.484562185370695 0.484560988787056 0.484563381976744 25.8272623107605 25.8270494055677 2490058.291298377 0.0345713019405523 165.616698729854 13.0508872291748 68.7282924980357 4754249.98005458 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
2118-Jun-15 18:08 < 00:01 Earth 0.456948442575043 0.456948201912183 0.45694868323363 23.1616550857572 23.161403330861 2494809.255550567 0.0252953210103624 177.881327930476 12.4468488651909 87.6696030346839 4944499.69191405 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
2131-Jun-17 00:30 < 00:01 Earth 0.481826026655021 0.481824741353048 0.481827311990902 21.3354307469815 21.3351715539483 2499558.521120570 0.014040422173173 184.015521846489 11.9273645108503 -75.0110937355315 5174677.77213645 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
2131-Nov-12 06:41 < 00:01 Earth 0.392342244695419 0.392337715657636 0.392346773738248 21.5119011311643 21.5115854332753 2499706.778411074 0.0474404374934198 203.55408581224 12.9295689583054 -14.1635076719403 1016584.86670778 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
2144-Nov-16 04:47 < 00:01 Earth 0.229993077686469 0.229988723536393 0.22999743186091 22.7669147574477 22.766405897506 2504459.699582539 0.0696933807265857 215.549124425766 12.4082137841476 -27.3091010114737 1149229.37442522 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
2157-Nov-21 17:04 < 00:01 Earth 0.114555447300588 0.114553865809548 0.114557028981618 24.7413834295907 24.740443314806 2509213.211415758 0.0822907337066092 225.360882785609 12.0329329336309 -72.2029018100956 1236107.5349101 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
2170-Nov-27 11:23 < 00:01 Earth 0.164489589763799 0.164484985614415 0.164494194001791 27.2477583867891 27.247163892212 2513966.974586102 0.104558055275264 281.254992858723 11.7624831944535 39.8108636725079 1240792.35705487 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
2183-Dec-04 06:30 < 00:01 Earth 0.319807987420078 0.319801650984364 0.319814323864828 30.5733579143381 30.5730854047135 2518721.770781735 0.113632320489305 318.434372735803 11.4842561910611 17.3453029771883 1174102.25944503 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
2196-Dec-10 09:55 < 00:01 Earth 0.488626709492297 0.488619869243435 0.488633549741547 34.316212883307 34.3160539785839 2523476.912898175 0.112945861364906 338.565275298699 11.2167935101125 9.41853624579374 1033778.94596661 T 332 CATAB v2.0c-linF95 2015-Jan-18 05:17:55 2015-Jan-18 05:18
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Feb-02 00:16 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin