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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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .456832996545099 9.5145e-08  
a 2.622102782665167 5.7685e-09 AU
q 1.424239711210996 2.4908e-07 AU
i 15.78053256961241 1.4079e-05 deg
node 229.4698751192961 4.0422e-05 deg
peri 186.3892640231754 4.231e-05 deg
M 139.4125862917437 1.1941e-05 deg
tp 2456399.917771286717
(2013-Apr-17.41777129)
5.1661e-05 JED
period 1550.861425698881
4.25
5.1177e-06
1.401e-08
d
yr
n .23212905681613 7.6601e-10 deg/d
Q 3.819965854119338 8.4037e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      455  
   data-arc span      33388 days (91.41 yr)  
   first obs. used      1923-10-31  
   last obs. used      2015-03-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58425  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:03:08  

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 1.89511877346391 1.89511725725467 1.89512028967997 3.81351094184636 3.69445078042097 2415307.854464976 1.17000672347549 18.4638033428446 6.62728712276185 -18.7797345104805 1274066.28554593 T 9 CATAB v2.0c-linF95 2015-Apr-07 16:03:11 2015-Apr-07 16:03
1906-Nov-13 19:59 < 00:01 Earth 0.442225766386199 0.44222524527622 0.442226287497576 8.24823429868209 8.24750378802383 2417528.332933057 0.285652700449856 122.561756780674 31.3364360971505 -89.3175831192042 1255767.1953173 T 9 CATAB v2.0c-linF95 2015-Apr-07 16:03:11 2015-Apr-07 16:03
1923-Nov-06 07:33 < 00:01 Earth 0.482347436938582 0.482346380282696 0.482348493609132 8.19680567878759 8.1961317320171 2423729.814592740 0.248832403032136 96.1573299858121 32.4191011447483 -67.1731642164653 1227593.17134883 T 9 CATAB v2.0c-linF95 2015-Apr-07 16:03:11 2015-Apr-07 16:03
1947-May-07 22:48 < 00:01 Jupiter 1.5749155706664 1.57491542178838 1.57491571954659 3.72103292119687 3.57357582720676 2432313.450192484 0.732216057357741 10.9817458205773 7.34115751583751 16.8813859349302 1401406.67283692 T 9 CATAB v2.0c-linF95 2015-Apr-07 16:03:11 2015-Apr-07 16:03
1949-Jun-08 05:35 < 00:01 Mars 0.0489888389687052 0.0489879165127404 0.0489897614320764 10.4781003450085 10.4775425969778 2433075.732840072 0.115278873627636 65.3001838513352 34.8474757034792 -65.2267895967548 177367.309578735 T 9 CATAB v2.0c-linF95 2015-Apr-07 16:03:11 2015-Apr-07 16:03
2007-Jan-03 00:57 < 00:01 Jupiter 1.58016682327293 1.5801665291023 1.58016711744911 3.73937641000383 3.59316973290351 2454103.539332482 0.675598261361229 10.796089971102 7.21392089739769 -10.1105050761153 1393791.32645786 T 9 CATAB v2.0c-linF95 2015-Apr-07 16:03:11 2015-Apr-07 16:03
2053-Jul-26 13:17 < 00:01 Jupiter 1.86978737142996 1.8697865161407 1.86978822673447 3.72965356902628 3.60614840141372 2471110.053463098 0.937051207581919 15.1556157389645 5.6839984280404 17.5352387664068 1432107.52103113 T 9 CATAB v2.0c-linF95 2015-Apr-07 16:03:11 2015-Apr-07 16:03
2055-Nov-17 10:55 < 00:01 Earth 0.433206734720849 0.433206120181312 0.433207349263689 8.27543604619553 8.27469277761589 2471953.954591529 0.207508878392997 86.7554401634898 30.2782124845455 82.5288023981886 1266430.2256005 T 9 CATAB v2.0c-linF95 2015-Apr-07 16:03:11 2015-Apr-07 16:03
2066-Sep-05 16:21 < 00:01 Jupiter 1.73817879232104 1.738177797346 1.73817978730405 3.80974686358898 3.67961437799364 2475899.181437573 0.849342424048278 14.5721003867317 6.6140522751982 -19.3265179882698 1353357.66131667 T 9 CATAB v2.0c-linF95 2015-Apr-07 16:03:11 2015-Apr-07 16:03
2072-Nov-17 08:41 < 00:01 Earth 0.445129984642029 0.445129392757371 0.445130576530206 8.19632496227713 8.19559462126743 2478163.861493314 0.244276806176004 99.1476779548744 30.0446547264779 82.7672222230085 1303583.51700617 T 9 CATAB v2.0c-linF95 2015-Apr-07 16:03:11 2015-Apr-07 16:03
2089-Nov-10 16:13 < 00:01 Earth 0.462231184285759 0.462230371688886 0.462231996899484 8.17976666909743 8.17906192587362 2484366.175487362 0.292749387590088 117.100948526121 30.8110944152378 -77.6759754951896 1299398.11950854 T 9 CATAB v2.0c-linF95 2015-Apr-07 16:03:11 2015-Apr-07 16:03
2113-Apr-06 14:39 00:01 Jupiter 1.64496028185892 1.64495988097658 1.64496068274984 3.69922038714751 3.55730122404155 2492913.110120506 1.04174519821905 12.1810722778779 7.21337911872152 24.1165083026889 1428062.10560166 T 9 CATAB v2.0c-linF95 2015-Apr-07 16:03:11 2015-Apr-07 16:03
2172-Dec-04 14:20 00:01 Jupiter 1.55831114312844 1.5583110341883 1.5583112520758 3.68612612998181 3.53559367649659 2514705.097027357 1.16685126333297 10.4121602979035 8.75459716393433 -18.7696912331453 1408063.27746923 T 9 CATAB v2.0c-linF95 2015-Apr-07 16:03:11 2015-Apr-07 16:03
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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