Initial characterization of interstellar comet 2I/Borisov

@article{Guzik2019InitialCO,
  title={Initial characterization of interstellar comet 2I/Borisov},
  author={Piotr Guzik and Michał Drahus and Krzysztof Rusek and Wacław Waniak and Giacomo Cannizzaro and In{\'e}s Pastor-Marazuela},
  journal={Nature Astronomy},
  year={2019},
  volume={4},
  pages={53-57}
}
Interstellar comets penetrating through the Solar System had been anticipated for decades 1 , 2 . The discovery of asteroidal-looking ‘Oumuamua 3 , 4 was thus a huge surprise and a puzzle. Furthermore, the physical properties of the ‘first scout’ turned out to be impossible to reconcile with Solar System objects 4 – 6 , challenging our view of interstellar minor bodies 7 , 8 . Here, we report the identification and early characterization of a new interstellar object, which has an evidently… 

Tables from this paper

Dust Production of Interstellar Comet 2I/Borisov Throughout Perihelion
The recently discovered comet 2I/Borisov quickly became a prime target for comet observers during its perihelion approach in 2019 December, after it was discovered to be the first comet of
2I/Borisov: A C2-depleted interstellar comet
Aims. The discovery of the first active interstellar object 2I/Borisov provides an unprecedented opportunity to study planetary formation processes in another planetary system. In particular,
Unusual polarimetric properties for interstellar comet 2I/Borisov
TLDR
Polarimetric observations of comet 2I/Borisov are performed using the European Southern Observatory Very Large Telescope to derive the physical characteristics of its coma dust particles, and it is shown that the polarization of 2I / Borisov is higher than what is typically measured for Solar System comets.
Interstellar comet 2I/Borisov exhibits a structure similar to native Solar system comets
We processed images taken with the Hubble Space Telescope (HST) to investigate any morphological features in the inner coma suggestive of a peculiar activity on the nucleus of the interstellar comet
Early Observations of the Interstellar Comet 2I/Borisov
2I/Borisov is the second ever interstellar object (ISO). It is very different from the first ISO ’Oumuamua by showing cometary activities, and hence provides a unique opportunity to study comets that
Activity of the first interstellar comet 2I/Borisov around perihelion: results from Indian observatories
Comet 2I/Borisov is the first true interstellar comet discovered. Here we present results from observational programs at two Indian observatories, 2 m Himalayan Chandra Telescope at the Indian
The New Astronomical Frontier of Interstellar Objects
The upcoming commencement of the Vera C. Rubin Observatory’s Legacy Survey of Space of Time (LSST) will greatly enhance the discovery rate of interstellar objects (ISOs). ‘Oumuamua and Borisov were
Activities and origins of interstellar comet 2I/Borisov
<p><span lang="EN-US">We will present the results of coordinated observations of 2I/Borisov with the Neil Gehrels-<em>Swift</em> observatory (<em>Swift</em>) and Hubble Space Telescope (HST), which
Gaseous atomic nickel in the coma of interstellar comet 2I/Borisov.
TLDR
Spectroscopic observations of atomic nickel vapour in the cold coma of 2I/Borisov at a heliocentric distance of 2.322 astronomical units are reported, in line with the recent identification of this atom-as well as iron-in the cold comae of Solar System comets17.
The Nucleus of Interstellar Comet 2I/Borisov
We present high resolution imaging observations of interstellar comet 2I/Borisov (formerly C/2019 Q4) obtained using the Hubble Space Telescope. Scattering from the comet is dominated by a coma of
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 38 REFERENCES
A brief visit from a red and extremely elongated interstellar asteroid
TLDR
Observations and analysis of the object 1I/2017 U1 (‘Oumuamua) that demonstrate its extrasolar trajectory, and that enable comparisons to be made between material from another planetary system and from the authors' own, reveal it to be asteroidal with no hint of cometary activity despite an approach within 0.25 astronomical units of the Sun.
Tumbling motion of 1I/‘Oumuamua and its implications for the body’s distant past
Models of the Solar System’s evolution show that almost all the primitive material leftover from the formation of the planets was ejected to the interstellar space as a result of dynamical
Kinematics of the Interstellar Vagabond 1I/'Oumuamua (A/2017 U1)
The initial Galactic velocity vector for the recently discovered hyperbolic asteroid 1I/'Oumuamua (A/2017 U1) is calculated for before its encounter with our solar system. The latest orbit (JPL-13)
Will the Large Synoptic Survey Telescope Detect Extra-Solar Planetesimals Entering the Solar System?
Planetesimal formation is a common by-product of the star formation process. Taking the dynamical history of the solar system as a guideline—in which the planetesimal belts were heavily depleted due
Dust Emission for Comets Shoemaker–Levy 1991a1 and McNaught–Russell 1993v
Abstract We present CCD photometric results for the dust comae of the dynamically new Comet Shoemaker–Levy 1991a1, carried out at heliocentric distances from 1.2 to 0.8 AU pre-perihelion, and the
Preperihelion Outbursts and Disintegration of Comet C/2017 S3 (Pan-STARRS)
A sequence of events, dominated by two outbursts and ending with the preperihelion disintegration of comet C/2017 S3, is examined. The onset times of the outbursts are determined with high accuracy
Comets and nongravitational forces
Orbital elements and nongravitational parameters are derived from observations at every apparition of the periodic comets Honda-Mrkos-Pajdusakova, Faye, Tempel 2, Biela, Brorsen, and Tempel-Swift.
Non-constant rotation period of Comet C/2001 K5 (LINEAR)
Abstract The article presents results of CCD photometry in R-band of a dynamically new Comet C/2001 K5 (LINEAR), obtained at a heliocentric distance of about 5.6 AU, after the perihelion passage.
The Active Centaurs
The Centaurs are recent escapees from the Kuiper Belt that are destined either to meet fiery oblivion in the hot inner regions of the solar system or to be ejected to the interstellar medium by
Could Solar Radiation Pressure Explain ‘Oumuamua’s Peculiar Acceleration?
'Oumuamua (1I/2017 U1) is the first object of interstellar origin observed in the solar system. Recently, Micheli et al. reported that 'Oumuamua showed deviations from a Keplerian orbit at a high
...
1
2
3
4
...