ʻOumuamua
ʻOumuamua, Gamba diambiak jo Teleskop William Herschel . 1I/ʻOumuamua iyolah titiak di tongah gamba. Basobok garak copek objek antarbintang, bintang-bintang di latar balakang tampak ajak garih-garih cahayo. | |
Panamoan | |
---|---|
1I/2017 U1 (ʻOumuamua)[1] | |
Asa namo | (namo Hawaii)[1] |
1I/ʻOumuamua 1I/2017 U1 · A/2017 U1 [2] C/2017 U1 [3] · P10Ee5V | |
Objek antarbintang,[1] asteroid hiperbola (JPL)[4] | |
Ciri-ciri orbit [4] | |
Epos 2017-Oct-31 (JD 2458057.5) | |
Rontang pangamatan | 34 hari |
Perihelion | 0,25534 AU |
−1,2799 AU[n 1] | |
Eksentrisitas | 1,19949 ± 0.00019 |
Kacapatan orbit rata-rata | 26,33±0,01 km/s (antarbintang)[5] |
35,060° | |
0° 40m 48.72s / day | |
Inklinasi | 122,69° |
24,599° | |
241,70° | |
MOID Bumi | 0,0958 AU · 37,3 LD |
MOID Jupiter | 1,455 AU |
Ciri-ciri fisik | |
Dimensi | 180 × 30 × 30 m (± 0.10)[6][7] 200 m (± 0.06–0.08)[8] |
8,14±0,02 h[9] 8,10±0,42 h[8] | |
0,1 (spectral est.)[6] 0,06–0,08 (spectral est.)[8] | |
RR (merah, tidak berbentuk)[10] D?[6] P?[8] B–V = 0,7±0,06[6] V-R = 0,45±0,05[6] g-r = 0,47±0,04[8] r-i = 0,36±0,16[8] r-J = 1,20±0,11[8] | |
19,7 hingga >27m5[5][n 2][11] | |
22,08±0,45[4] | |
1I/‘Oumuamua (sacaro rasmi banamo 1I/2017 U1; sabalunnyo C/2017 U1 (PANSTARRS) dan A/2017 U1) adolah objek antarbintang nan partamo dikana nan lalu ka Tata Surya.[12] Objek iko awalnyo dikiro sabuah komet, kudian diklasifikasikan sabagai asteroid saminggu kudian. Objek iko iyolah bando partamo dari objek antarbintang. Akibaik lintasan hiperbola, bando iko akan malalui orbit Neptunus pado taun 2022 dan maninggakan sistem Tata Surya kiro-kiro 20.000 taun. Jumlah wakatu objek tasabuik malayang di antaro bintang-bintang galaksi cakram iko alun dikatahui.
Badasarkan 34 hari observasi arc, eksentrisitas orbit ‘Oumuamua iko iyolah 1,20, nan paliang tinggi dari objek nan alun dicaliak dalam sistem Tata Surya. Pamogang rekor sabalunnyo iyolah C/1980 E1 dangan eksentrisitas orbit 1,057.[n 3] Eksentrisitas tinggi dari orbit ‘Oumuamua, baiak orbit masuak dan kalua, manunjuakan dek bando tu indak parnah tarikek gravitasi ka Tata Surya dan objek antarbintang basobok laju masuak nan labih capek daripado Laju lapeh Matoari. Benda iko bagarak pado arah nan balawanan dari orbit planet-planet, pado kamiringan ka ekliptika hinggo 60°. Arah garakan dari ‘Oumuamua iyolah 6° dari apeks tata surya.
Nomenklatur
[suntiang | suntiang sumber]Artikel ko sadang disiapkan dan sadang dikambangkan, dan mungkin akan tajadi parubahan-parubahan gadang. Sanak dapek mambantu dalam pangambangan laman ko. Laman ko taakhia disuntiang dek InternetArchiveBot (Kontrib • Log) 370 hari 1285 menit nan lalu. Kok Sanak mancaliak artikel ko indak disuntiang dalam babarapo hari, mohon hapuih templat ko. |
Catatan
[suntiang | suntiang sumber]- ↑ Objects in hyperbolic orbits have negative semimajor axis, giving them a positive orbital energy.
- ↑ Range at which the object is expected to be observable. Brightness peaked at 19.7 mag on 18 October 2017, and fades below 27.5 mag (the limit of HST for fast-moving objects) around 1 January 2018. By late 2019, it should dim to 34 mag.
- ↑ Unlike ʻOumuamua, C/1980 E1's orbit got its high eccentricity due to a close encounter with Jupiter. Its inbound-orbit eccentricity was less than 1.
Rujuakan
[suntiang | suntiang sumber]- ↑ a b c "MPEC 2017-V17 : NEW DESIGNATION SCHEME FOR INTERSTELLAR OBJECTS". Minor Planet Center. International Astronomical Union. 6 November 2017. Diakses tanggal 6 November 2017.
- ↑ "MPEC 2017-U183: A/2017 U1". Minor Planet Center. International Astronomical Union. 25 October 2017. Diakses tanggal 25 October 2017. (AK17U010)
- ↑ "MPEC 2017-U181: COMET C/2017 U1 (PANSTARRS)". Minor Planet Center. International Astronomical Union. 25 October 2017. Diakses tanggal 25 October 2017. (CK17U010)
- ↑ a b c "JPL Small-Body Database Browser: ʻOumuamua (A/2017 U1)" (JPL s14 with last obs: 17 November 2017). Jet Propulsion Laboratory. Diarsipkan dari versi asli tanggal 25 October 2017. Diakses tanggal 23 November 2017.
- ↑ a b "Pseudo-MPEC for A/2017 U1 (Fact File)". Bill Gray of Project Pluto. 26 October 2017. Diakses tanggal 26 October 2017. (Orbital elements)
- ↑ a b c d e Jewitt, David; Luu, Jane; Rajagopal, Jayadev; Kotulla, Ralf; Ridgway, Susan; Liu, Wilson; Augusteijn, Thomas (2017). "Interstellar Interloper 1I/2017 U1: Observations from the NOT and WIYN Telescopes" (PDF). Submitted to Astrophysical Journal Letters: 11. arXiv:1711.05687 .
- ↑ "A Familiar-Looking Messenger from Another Solar System". National Optical Astronomy Observatory. Diarsipkan dari versi asli tanggal 2017-11-16. Diakses tanggal 15 November 2017.
- ↑ a b c d e f g Bannister, Michele T.; Schwamb, Megan E. (2017). "Col-OSSOS: Colors of the Interstellar Planetesimal 1I/2017 U1 in Context with the Solar System". Submitted to ApJL: 9. arXiv:1711.06214 .
- ↑ Bolin, Bryce T.; Weaver, Harold A.; Fernandez, Yanga R.; Lisse, Carey M.; Huppenkothen, Daniela; Jones, R. Lynne; Juric, Mario; Moeyens, Joachim; Schambeau, Charles A.; Slater, Colin T.; Ivezic, Zeljko; Connolly, Andrew J. (2017). "APO Time Resolved Color Photometry of Highly-Elongated Interstellar Object 1I/ʻOumuamua". Submitted to Astrophysical Journal Letters: 11. arXiv:1711.04927 .
- ↑ Fitzsimmons, Alan [@FitzsimmonsAlan] (27 Oct 2017). "Spectrum of A/2017 U1 obtained on Wednesday night with the @INGLaPalma 4.2m WHT. Colour is red like Kuiper Belt Objects, featureless" (Tweet) – via Twitter.
- ↑ "Which way home? Finding the origin of our Solar System's first interstellar visitor" (PDF). NASA. Diakses tanggal 15 November 2017.
- ↑ Overbye, Dennis (22 November 2017). "An Interstellar Visitor Both Familiar and Alien". The New York Times. Diakses tanggal 23 November 2017.
<ref>
jo namo "NASA171026" pado <references>
indak ado.Pautan lua
[suntiang | suntiang sumber]- Media tantang ʻOumuamua di Wikimedia Commons
- Astronomy Picture of the Day – 3. November 2017 – A/2017 U1: ein interstellarer Besucher, NASA 2017-11-06
- Astronomy Picture of the Day – 22. November 2017 – ʻOumuamua: Interstellarer Asteroid, NASA 2017-11-22
- Ein Botschafter aus dem Raum zwischen den Sternen: ʻOumuamua, der erste interstellare Asteroid Florian Freistetter, 2017-11-14
- ESO: VLT enthüllt dunkles, rötliches und langgezogenes Objekt. Pressemitteilung mit Karte, Fotos und Animationen. 20. November 2017
- ESO: Das VLT der ESO beobachtet, wie `Oumuamua zusätzlichen Schub erhält mit Karte, Fotos und Animationen. 27. Juni 2018
- TED (Konferenz) Talk: Karen J. Meech The story of 'Oumuamua, the first visitor from another star system
- Spektrum.de: Neues vom interstellaren Besucher 29. März 2019
Iko baru laman rancangan. Bantulah Wikipedia untuak mangambangannyo. |