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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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4568329983616149 9.5195e-08  
a 2.622102783822693 6.0463e-09 AU
q 1.424239707076635 2.4918e-07 AU
i 15.78053290591891 1.4126e-05 deg
node 229.4698706615036 4.2702e-05 deg
peri 186.3892648616634 4.477e-05 deg
M 139.41258762421 1.2179e-05 deg
tp 2456399.917765148830
(2013-Apr-17.41776515)
5.2796e-05 JED
period 1550.861426725822
4.25
5.3642e-06
1.469e-08
d
yr
n .2321290566624201 8.0289e-10 deg/d
Q 3.819965860568752 8.8084e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      451  
   data-arc span      33086 days (90.58 yr)  
   first obs. used      1923-10-31  
   last obs. used      2014-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58603  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-07 23:48:59  

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 (024)
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 1.89511891438353 1.89511731111799 1.89512051765013 3.81351089563336 3.69445074171456 2415307.854485402 1.19831096775539 18.8784584328025 6.81840612112194 -19.5343690835697 1262302.65448058 T 8 CATAB v2.0c-linF95 2015-Jan-07 23:49:02 2015-Jan-07 23:49
1906-Nov-13 19:59 < 00:01 Earth 0.442225760442004 0.442225238287855 0.442226282597062 8.24823448508579 8.24750397443422 2417528.332930407 0.287202596997795 122.65325730578 31.4602857980546 -89.276617811468 1250813.40405541 T 8 CATAB v2.0c-linF95 2015-Jan-07 23:49:02 2015-Jan-07 23:49
1923-Nov-06 07:33 < 00:01 Earth 0.482347420119619 0.482346361810321 0.482348478435548 8.1968058913195 8.19613194454298 2423729.814589994 0.250275761043364 96.2055984433821 32.5928528610073 -67.101541350078 1220607.88379035 T 8 CATAB v2.0c-linF95 2015-Jan-07 23:49:02 2015-Jan-07 23:49
1947-May-07 22:48 < 00:01 Jupiter 1.5749155419292 1.57491538492169 1.57491569894245 3.72103295697291 3.57357586171289 2432313.450190201 0.765544050095831 11.1126827633229 7.72575733858525 20.200021131437 1399297.93789424 T 8 CATAB v2.0c-linF95 2015-Jan-07 23:49:02 2015-Jan-07 23:49
1949-Jun-08 05:35 < 00:01 Mars 0.0489888387055525 0.0489879008668806 0.0489897765519945 10.4781005402567 10.4775427922334 2433075.732831489 0.117257755081212 65.976418747766 35.1521767713845 -64.6508608171038 175257.313966855 T 8 CATAB v2.0c-linF95 2015-Jan-07 23:49:02 2015-Jan-07 23:49
2007-Jan-03 00:57 < 00:01 Jupiter 1.58016686905956 1.58016655372586 1.58016718439758 3.73937639344694 3.59316971999557 2454103.539357490 0.714766299517687 10.9200550295829 7.66683748449579 -13.2977636720054 1388674.44252276 T 8 CATAB v2.0c-linF95 2015-Jan-07 23:49:02 2015-Jan-07 23:49
2053-Jul-26 13:17 < 00:01 Jupiter 1.86978723902656 1.86978628660573 1.86978819144764 3.72965366463349 3.60614849139991 2471110.053484709 0.968784177529824 15.641919989163 5.87886564914558 19.1680989477293 1431814.94364127 T 8 CATAB v2.0c-linF95 2015-Jan-07 23:49:02 2015-Jan-07 23:49
2055-Nov-17 10:55 < 00:01 Earth 0.433206727887164 0.433206112301574 0.433207343474871 8.27543626661627 8.27469299804471 2471953.954586941 0.211488329574319 86.9077753563652 30.332983059337 82.5542052041535 1264207.95803582 T 8 CATAB v2.0c-linF95 2015-Jan-07 23:49:02 2015-Jan-07 23:49
2066-Sep-05 16:21 < 00:01 Jupiter 1.73817890902256 1.73817782536715 1.73817999267983 3.80974687421091 3.67961439788283 2475899.181456041 0.889144593099067 15.0781638432929 6.85795223814931 -21.1345087195258 1342507.6320455 T 8 CATAB v2.0c-linF95 2015-Jan-07 23:49:02 2015-Jan-07 23:49
2072-Nov-17 08:41 < 00:01 Earth 0.445129981535524 0.44512938921937 0.445130573856358 8.1963251207538 8.19559477975312 2478163.861490498 0.247794089005622 99.2540092839781 30.0792646373784 82.7876903089963 1302137.20752671 T 8 CATAB v2.0c-linF95 2015-Jan-07 23:49:02 2015-Jan-07 23:49
2089-Nov-10 16:13 < 00:01 Earth 0.462231172935347 0.462230360686375 0.462231985201161 8.17976684834425 8.17906210511858 2484366.175483150 0.296139236946776 117.298772951349 30.8769288978276 -77.6863457271445 1296677.04227213 T 8 CATAB v2.0c-linF95 2015-Jan-07 23:49:02 2015-Jan-07 23:49
2113-Apr-06 14:39 00:01 Jupiter 1.6449602124656 1.64495977442692 1.64496065051355 3.69922040748174 3.55730123908068 2492913.110122353 1.07122587763505 12.4488950054437 7.47849385903831 27.0798735147957 1427903.78680209 T 8 CATAB v2.0c-linF95 2015-Jan-07 23:49:02 2015-Jan-07 23:49
2172-Dec-04 14:20 00:01 Jupiter 1.55831114605851 1.55831103578597 1.55831125633786 3.68612621061442 3.53559376085131 2514705.097017466 1.1951380947755 10.5064419529891 9.13910865962675 -25.5852808755368 1406799.26554369 T 8 CATAB v2.0c-linF95 2015-Jan-07 23:49:02 2015-Jan-07 23:49
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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