1009 Sirene

1009 Sirene
Discovery[1]
Discovered byK. Reinmuth
Discovery siteHeidelberg Obs.
Discovery date31 October 1923
Designations
(1009) Sirene
PronunciationGerman: [ˈziːʁeːnə]
Named after
Siren (Σειρήν - Sīrēn) (Greek mythology)[2]
1923 PE
Mars-crosser[1][3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc92.69 yr (33,854 days)
Aphelion3.8207 AU
Perihelion1.4259 AU
2.6233 AU
Eccentricity0.4564
4.25 yr (1,552 days)
11.512°
0° 13m 55.2s / day
Inclination15.775°
229.46°
186.35°
Earth MOID0.4384 AU · 170.8 LD
Physical characteristics
Dimensions5 km (est. at 0.20)[4]
13.9[1]

Sirene (minor planet designation: 1009 Sirene), provisional designation 1923 PE, is an eccentric asteroid and sizable Mars-crosser from the central regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory on 31 October 1923.[3] The asteroid was named after the Siren from Greek mythology.[2]

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