Pre-discovery Activity of New Interstellar Comet 2I/Borisov beyond 5 au

@article{Ye2019PrediscoveryAO,
  title={Pre-discovery Activity of New Interstellar Comet 2I/Borisov beyond 5 au},
  author={Quanzhi Ye and Michael S. P. Kelley and Bryce T. Bolin and Dennis Bodewits and Davide Farnocchia and Frank J. Masci and Karen J. Meech and Marco Micheli and Robert J. Weryk and Eric C. Bellm and Eric Christensen and Richard Dekany and Alexandre Delacroix and Matthew J. Graham and Shrinivas R. Kulkarni and Russ R. Laher and Ben Rusholme and Roger M. Smith},
  journal={The Astronomical Journal},
  year={2019},
  volume={159},
  pages={77}
}
Comet 2I/Borisov, the first unambiguous interstellar comet ever found, was discovered in 2019 August at ~3 au from the Sun on its inbound leg. No pre-discovery detection beyond 3 au has yet been reported, mostly due to the comet's proximity to the Sun as seen from the Earth. Here we present a search for pre-discovery detections of comet Borisov using images taken by the Catalina Sky Survey, Pan-STARRS, and the Zwicky Transient Facility (ZTF), with a further comprehensive follow-up campaign… 

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References

SHOWING 1-10 OF 67 REFERENCES
Initial Characterization of Interstellar Comet 2I/2019 Q4 (Borisov)
We present initial observations of the interstellar body 2I/(2019 Q4) Borisov taken to determine its nature prior to the perihelion in 2019 December. Images from the Nordic Optical Telescope show a
Spectroscopy and thermal modelling of the first interstellar object 1I/2017 U1 ‘Oumuamua
During the formation and evolution of the Solar System, significant numbers of cometary and asteroidal bodies were ejected into interstellar space1,2. It is reasonable to expect that the same
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,
Photometry of the nucleus of Comet 9P/Tempel 1 from Stardust-NExT flyby and the implications
Abstract The photometric properties of the nucleus of Comet 9P/Tempel 1 as modeled from the Stardust-NExT images agree with those reported by Li et al. (Li, J.-Y. et al. [2007a]. Icarus 187, 41–55;
An Early Look of Comet C/2013?A1 (Siding Spring): Breathtaker or Nightmare?
The dynamically new comet, C/2013?A1 (Siding Spring), is to make a close approach to Mars on 2014 October 19 at 18:30 UT at a distance of 40 ? 1 Martian radii. Such an extremely rare event offers a
An Extended CO Source around Comet 29P/Schwassmann-Wachmann 1
Abstract Comet 29P/Schwassmann–Wachmann 1 has been studied during seven days in August 1998 with the SEST submillimeter telescope at ESO, La Silla, Chile. The CO ( J =2−1) emission at 230 GHz was
Detection of CN Gas in Interstellar Object 2I/Borisov
The detection of Interstellar Objects passing through the Solar System offers the promise of constraining the physical and chemical processes involved in planetary formation in other extrasolar
Substantial outgassing of CO from comet Hale–Bopp at large heliocentric distance
TLDR
The detection of CO emission from Hale–Bopp is reported, at levels indicating a very large rate of outgassing, and it is anticipated that future observations will reveal the onset of sublimation of other volatile species as the comet continues its present journey towards the Sun.
A Twilight Search for Atiras, Vatiras, and Co-orbital Asteroids: Preliminary Results
Near-Earth Objects (NEOs) that orbit the Sun on or within Earth's orbit are tricky to detect for Earth-based observers due to their proximity to the Sun in the sky. These small bodies hold clues to
Cometary brightness variation and nucleus structure
The Bobrovnikoff and Beyer photometric data for more than 100 comets have been analyzed for intrinsic brightness variations,before andafter perihelion, according to ther−n law, wherer is solar
...
1
2
3
4
5
...