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1009 Sirene (1923 PE)
Classification: Mars-crossing Asteroid          SPK-ID: 2001009
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4568329939550515 9.4962e-08  
a 2.622102779769761 4.8522e-09 AU
q 1.424239716429678 2.4867e-07 AU
i 15.78053022980447 1.3708e-05 deg
node 229.4698971266001 3.1539e-05 deg
peri 186.3892489803863 3.2939e-05 deg
M 139.412584261329 1.1226e-05 deg
tp 2456399.917781028410
(2013-Apr-17.41778103)
4.8257e-05 JED
period 1550.861423130118
4.25
4.3048e-06
1.179e-08
d
yr
n .2321290572006161 6.4433e-10 deg/d
Q 3.819965843109844 7.0688e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      523  
   data-arc span      33473 days (91.64 yr)  
   first obs. used      1923-10-31  
   last obs. used      2015-06-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5845  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 11:37:22  

Additional Information
 Earth MOID = .436214 AU 
 T_jup = 3.200 
[ 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 13.8 mag n/a MPO265961  

1009 Sirene (1923 PE)          Discovered 1923-Oct-31 by Reinmuth, K. at Heidelberg
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-Oct-15 08:30 00:01 Jupiter 1.89511842810772 1.89511719891568 1.89511965729686 3.81351043803377 3.69445023832563 2415307.854474551 1.07746954533887 17.2029276019295 5.79874954259702 -16.7133194440034 1344511.29839919 T 11 CATAB v2.0c-linF95 2015-Jul-06 11:37:26 2015-Jul-06 11:37
1906-Nov-13 19:59 < 00:01 Earth 0.442225769851615 0.442225250598465 0.442226289105494 8.2482330039958 8.24750249322859 2417528.332942294 0.280322503253789 122.290058176513 30.5367658490271 -89.4761380510815 1288686.94286134 T 11 CATAB v2.0c-linF95 2015-Jul-06 11:37:26 2015-Jul-06 11:37
1923-Nov-06 07:33 < 00:01 Earth 0.482347467373197 0.482346409455337 0.482348525305524 8.19680420921722 8.19613026236842 2423729.814601040 0.244340556575864 95.9717288375128 31.4611398515614 -67.4974097280959 1266910.99410116 T 11 CATAB v2.0c-linF95 2015-Jul-06 11:37:26 2015-Jul-06 11:37
1947-May-07 22:48 < 00:01 Jupiter 1.57491561954839 1.57491549697781 1.57491574212411 3.72103257232222 3.57357546860761 2432313.450204330 0.623443089296625 10.5239937603397 5.95196042587683 8.56697348795285 1424020.34524786 T 11 CATAB v2.0c-linF95 2015-Jul-06 11:37:26 2015-Jul-06 11:37
1949-Jun-08 05:35 < 00:01 Mars 0.048988890168318 0.0489880232572192 0.0489897570857478 10.4780993119313 10.4775415644284 2433075.732867931 0.109034242918452 63.2295069746473 33.6042879639253 -67.4202523538356 185999.800373768 T 11 CATAB v2.0c-linF95 2015-Jul-06 11:37:26 2015-Jul-06 11:37
2007-Jan-03 00:57 < 00:01 Jupiter 1.58016669604802 1.58016648488552 1.58016690721605 3.7393759383196 3.59316923001524 2454103.539358960 0.538294036220306 10.3881957540411 5.53156898890948 -4.21074959018321 1431299.93658779 T 11 CATAB v2.0c-linF95 2015-Jul-06 11:37:26 2015-Jul-06 11:37
2053-Jul-26 13:17 < 00:01 Jupiter 1.86978767325257 1.86978709412756 1.86978825240085 3.72965330044708 3.60614814391377 2471110.053454508 0.842270422220191 13.6143869364622 4.88558384598692 11.4447532928144 1439270.3145495 T 11 CATAB v2.0c-linF95 2015-Jul-06 11:37:26 2015-Jul-06 11:37
2055-Nov-17 10:55 < 00:01 Earth 0.433206749284921 0.433206136214658 0.433207362359865 8.27543492710374 8.27469165844857 2471953.954605145 0.19329118099576 86.2319433257019 29.8411325072681 82.2839759079629 1284313.92059761 T 11 CATAB v2.0c-linF95 2015-Jul-06 11:37:26 2015-Jul-06 11:37
2066-Sep-05 16:21 < 00:01 Jupiter 1.73817848841444 1.73817780210091 1.73817917473423 3.80974640759989 3.67961388272317 2475899.181437218 0.71477117410425 13.0289382651562 5.52392137255491 -13.444269726321 1417277.33477204 T 11 CATAB v2.0c-linF95 2015-Jul-06 11:37:26 2015-Jul-06 11:37
2072-Nov-17 08:41 < 00:01 Earth 0.445129995127083 0.445129403030467 0.44513058722913 8.19632389098531 8.19559354989735 2478163.861507136 0.231621861611174 98.7605880864819 29.6983193377133 82.5840302064937 1318278.48484567 T 11 CATAB v2.0c-linF95 2015-Jul-06 11:37:26 2015-Jul-06 11:37
2089-Nov-10 16:13 < 00:01 Earth 0.462231183505526 0.462230366997138 0.462232000030662 8.17976551986852 8.1790607765445 2484366.175501512 0.281451669026129 116.404639509164 30.3735265139972 -77.7528481205725 1318439.34901827 T 11 CATAB v2.0c-linF95 2015-Jul-06 11:37:26 2015-Jul-06 11:37
2113-Apr-06 14:39 < 00:01 Jupiter 1.64496043891287 1.64496013940628 1.64496073842227 3.69922015291174 3.55730099428105 2492913.110125723 0.951373221213506 11.3984630672918 6.1713624828735 14.9392366303752 1436753.79719863 T 11 CATAB v2.0c-linF95 2015-Jul-06 11:37:26 2015-Jul-06 11:37
2172-Dec-04 14:20 00:01 Jupiter 1.55831111316357 1.55831102162857 1.55831120470286 3.68612582234976 3.53559335281049 2514705.097031802 1.0758020000215 10.2012490641479 7.32153144414374 -9.90868591920749 1426739.99434508 T 11 CATAB v2.0c-linF95 2015-Jul-06 11:37:26 2015-Jul-06 11:37
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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