Planet 2I/Borisov

Name 2I/Borisov
Planet Status Confirmed
Discovered in 2019
Mass
Mass*sin(i)
Semi-Major Axis
Orbital Period
Eccentricity 3.155 (± 0.13)
ω
Tperi
Radius 6.2e-05 RJ
Inclination
Update 2020-07-21
Detection Method Imaging
Mass Detection Method
Radius Detection Method
Primary transit
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K
Calculated temperature
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names C/2019 Q4 (Borisov)

Star

Sun
Name Sun
Distance
Spectral type
Apparent magnitude V
Mass 1.0 MSun
Age
Effective temperature
Radius 1.0 RSun
Metallicity [Fe/H]
Detected Disc
Magnetic Field
RA2000 00:00:00.0
Dec2000 +00:00:00
Alternate Names
Planetary system
2 planets

More data

Atmospheric parameters

Temperatures

Data Source Type Result Value Result Figure Notes Reference

Molecules

Molecule Data Source Type Result Value Result Figure Notes Reference
C2 Measurements Detected 2020 - LIN H.
Measurements Detected 2020 - BANNISTER M.
Measurements Detected 2019 - KARETA Th.
CN Measurements Detected 2020 - LIN H.
Measurements Detected 2019 - FITZSIMMONS A.
Measurements Detected 2019 - OPITOM C.
Measurements Disk average 2020 - BANNISTER M.
CO Measurements Detected 2020 - CORDINER M.
Measurements Detected 2020 - BODEWITS D.
H2O Measurements Detected 2020 - XING Z.
Measurements Detected 2020 - BODEWITS D.
NH2 Measurements Detected 2020 - BANNISTER M.
Measurements Detected 2020 - XING Z.
O I Measurements Detected 2019 - McKAY A.
OH Measurements Detected 2020 - XING Z.
Measurements Detected 2019 - CROVISIER J.

Observability Predictor

Remarks

2 March 2020:
IAU Telegram 4719
15 Jan 2020:
IAU Telegram 4710
14 Dec 2019:
Time Lapse (Hubble)
26 Nov 2019:
Minor Planet Electronic Circulars:
2019-V34
2019-U80
2019-T116
2019-T44
2019-S120
2019-S72
2019-S62
2019-S25
2019-S09
2019-S03
2019-R113
2019-R106
4 Nov 2019:
Marginal OH detection (Crovisier et al.)
18 Oct 2019:
Electronic Telegram 4679
16 Oct 2019:
Hubble DDT Program 16009 (D. Jewitt)
Observation by Hubble
24 Sep 2019:
IAU Press Release  
19 Sep 2019:
Spectrum at Gran Telescopio Canarias (GTC)
19 Sep 2019:
JPL
16 Sep 2019:
ESA website
13 Sep 2019:
FAQ for 2I/Borisov
13 Sep 2019:
Minimum heliocentric distance: 1.96 ± 0.04 AU on 9 Dec 2019
Minimum geocentric distance: 1.89 AU on 28 Dec 2019 (Guzik et al. 2019)

Related publications

Capture of interstellar objects: a source of long-period comets
2020 HANDS T. & DEHNEN W.
MNRAS, 493, L59
paper  arxiv  

Detection of Diatomic Carbon in 2I/Borisov
2020 LIN H., LEE Ch.-H., GERDES D., ADAMS F., BECKER J. et al.
ApJ. Letters, 889, L30
paper  arxiv  

A search for the origin of the interstellar comet 2I/Borisov
2020 BAILER-JONES C., FARNOCCHIA D., YE Q., MEECH K. & MICHELI M.
Astron. & Astrophys., in press
paper  arxiv  

Hyperbolic Orbits in the Solar System: Interstellar Origin or Perturbed Oort Cloud Comets?
2020 HIGUCHI A. & KOKUBO E.
MNRAS, 492, 268
paper  arxiv  

Detecting Interstellar Objects Through Stellar Occultations
2020 SIRAJ A. & LOEB A.
ApJ. Letters, 891, L3
paper  arxiv  

Water production rates and activity of interstellar comet 2I/Borisov
2020 XING Z., BODEVITS D., NOORAN J. & BANNISTER M.
ApJ. Letters, 893, L48
paper   arxiv  

Searching for water ice in the coma of interstellar object 2I/Borisov
2020 YANG B., KELLEY M., MEECH K., KEANE J., PROTOPAPPA S & BUS S.
Astron. & Astrophys., 634, L6
paper  

Interstellar comet 2I/Borisov as seen by MUSE: C2, NH2 and red CN detections
2020 BANNISTER M., OPITOM M., FITZSIMMONS A., MOULANE Y., JEHIN E. et al.
ApJ. Letters, submitted
arxiv  

The Design of a Space-based Observation and Tracking System for Interstellar Objects
2020 NALLAPU R., XU Y., MARQUEZ A., SCHULER T. & THABGAVELAUTHAM J.
AAS GNC Conferences 2020
arxiv  

Potential Backup Targets for Comet Interceptor
2020 SCHWAMB M., KNIGHT M., JONES G., SNODGRASS C., BUCCI L. et al.
Res. Notes AAS, 4, 21
paper  arxiv  

Follow-up imaging observations of comet 2I/Borisov
2020 MURGRAUER M., BISCHOFF R., STENGLEIN W., TRAUTMANN J., BAGHDASARYAN B. & SCHLAGENHAUF S.
Astron. Nachricht., accepted
arxiv  

Physical Characterisation of Interstellar Comet 2I/2019 Q4 (Borisov)
2020 HUI M.-T., YE Q.-Zh., FÖHRING D., HUNG D. & THOLEN D.
Astron. J., 160, 92
paper  arxiv

Possible fragmentation of interstellar comet 2I/Borisov
2020 BOLLIN B., BODEWITS D., LISSE C., FERNANDEZ Y. & CENKO S.
Astron. Telegr., no. 13613

Multiple Outbursts of Interstellar Comet 2I/Borisov
2020 DRAHUS M., GUZIK P., UDALSKI A., RATAJCZAK M., RYBICKI K. et al.
Astron. Telegr., no. 13549
paper

Interstellar Comet 2I/Borisov exhibits a structure similar to native Solar System comets
2020 MANZINI F., OLDANI V., OCHNER P. & BEDIN L.
MNRAS, 495, L92
paper   arxiv

Interstellar Comet 2I/Borisov is Single Again
2020 ZHANG Q., YE Q., & KOLOKOLOVA L.
Astron. Telegr., no. 13618
paper

Dust Environment Model of the Interstellar Comet 2I/Borisov
2020 CREMONESE G., FULLE M., CAMBIANICA P., MUNARETTO G., CAPRIA M. et al.
ApJ. Letters, 893, L12
paper

Tidal fragmentation as the origin of 1I/2017 U1 (‘Oumuamua)
2020 ZHANG Y. & LIN D.
Nature Astronomy, in press
paper   arxiv

The carbon monoxide-rich interstellar comet 2I/Borisov
2020 BODEWITS D., NOONAN J., FELDMAN P., BANNISTER M., FARNOCCHIA D. et al.
Nature Astronomy, in press
paper   arxiv

Unusually High CO Abundance of the First Active Interstellar Comet
2020 CORDINER M., MILAM S., BIVER N., BOCKELEE-MORVAN D., ROTH D. et al.
Nature Astronomy, in press
paper   arxiv

Coma Anisotropy and the Rotation Pole of Interstellar Comet 2I/Borisov
2020 KIM Y., JEWITT D., MUTCHLER M., AGARWAL J., HUI M.-T. & WEAVER H.
ApJ. Letters, submitted
arxiv

Retrograde orbits excess among observable interstellar objects
2020 MARCETA D. & NOVAKOVIC B.
MNRAS, 498, 5386
paper   arxiv

Possible Interstellar meteoroids detected by the Canadian Meteor Orbit Radar
2020 FRONCISZ M., BROWN P. & WERYK R.
Plan. Spa. Sci., accepted
arxiv

Outburst and Splitting of Interstellar Comet 2I/Borisov
2020 JEWITT D., KIM Y., MUTCHLER M., WEAVER H., AGARWAL J. & HUI M.-T.
ApJ., 896, L39
paper   arxiv

Exocomets from a Solar System Perspective
2020 STROM P., BODEWITS D., KNIGHT M., KIEFER F., JONES G. et al.
PASP, 132, 101001
paper  arxiv  

Constraints on the Spin-Pole Orientation, Jet Morphology and Rotation of Interstellar Comet 2I/Borisov with Deep HST Imaging
2020 BOLIN B. & LISSE C.
MNRAS, in press
paper  

Infrared Observations of 2I/Borisov near Perihelion
2020 LEE C.-H., LIN H.-W., CHEN Y.-T. & YEN S.-F.
Astron. J., 160, 132
paper  

Constraining the orientation of the spin axes of extrasolar minor bodies 1I/2017 U1 (`Oumuamua) and 2I/Borisov
2020 de la FUENTE MARCOS C. & de la FUENTE MARCOS R.
Astron. & Astrophys., 643, A18
paper  arxiv  

Transformative Planetary Science with the US ELT Program
2020 WONG M., MEECH K., DICKINSON M., GREATHOUSE Th., CARTWRIGHT R. et al.
White Paper submitted to the 2023-2032 Planetary Science and Astrobiology Decadal Survey
arxiv  

The Scientific Impact of the Vera C. Rubin Observatory's Legacy Survey of Space and Time (LSST) for Solar System Science
2020 JONES R., BANNISTER M., BOLIN B., CHANDLER C., CHESLEY S. et al.
White paper submitted to the 2020 Planetary Astronomy Decadal Survey
arxiv  

Observable Signatures of the Ejection Speed of Interstellar Objects from their Birth Systems
2020 SIRAJ A. & LOEB A.
ApJ. Letters, submitted
arxiv  

The Inbound Light Curve of 2I/Borisov
2019 GLADMAN B., BOLEY A. & BALAM D.
Res. Notes AAS, 3, 187
paper  

Interstellar comet 2I/Borisov
2019 GUZIK P., DRAHUS M., RUSEK K., WANIAK W., CANNIZZARO G. & PIOTR-MARAZUELA I.
Nature Astronomy, 4, 53
paper   arxiv  

Sending a Spacecraft to Interstellar Comet C/2019 Q4(Borisov)
2019 HIBBERD A., PERAKIS N. & HEIN A.
arxiv  

An Argument for a Kilometer-Scale Nucleus of C/2019 Q4
2019 SIRAJ A. & LOEB A.
Res. Notes AAS, 3, 132
paper  arxiv  

Interstellar Visitors: A Physical Characterization of Comet C/2019 Q4 (Borisov) with OSIRIS at the 10.4 m GTC
2019 de LEON J., LICANDRO J., SERRA-RICART M., CABRERA-LAVERS A., FONT SERRA J. et al.
Res. Notes AAS, 3, 131
paper  

Optical spectrum of C/2019 Q4
2019 FITZSIMMONS A., HAINAUT O., YANG B., OPITOM C., MEECH K. etal.
Central Bureau for Astronomical Telegrams, No. 4670
Full text

Kruger 60 -- a plausible home system of the interstellar comet C/2019 Q4
2019 DYBCZYNSKI P., KROLIKOWSKA M. & WYOCZANSKA R.
arxiv  

Interstellar Comet gb00234
2019 GUZIK P., DRAHUS M., RUSEK K., WANIAK W., CANNIZZARO G. & PASTOR MARAZUEALA I.
Astronomical Telegram, ATel#13100
paper  

Clues to Understanding the Microphysics of Dust in the Interstellar Comet C/2019 Q4 (Borisov)
2019 ZUBKO E., CHORNAYA E., VIDEEN G. & KIM S.
Res. Notes AAS, 3, 138
paper

Detection of CN gas in Interstellar Object 2I/Borisov
2019 FITZSIMMONS A., HAINAUT O., MEECH K., JEHIN E., MOULANE Y. et al.
ApJ. Letters, 885, L9
paper  arxiv  

Optical spectrum of 2I/Borisov
2019 YANG B., KEANE J., KELLEY M., PROTOPAPA S. & MEECH K.
Central Bureau for Astronomical Telegrams, No. 4672
Full text

Initial Characterization of Interstellar Comet 2I/2019 Q4 (Borisov)
2019 JEWITT D. & LUU J.
ApJ, submitted
arxiv  

Carbon Chain Depletion of 2I/Borisov
2019 KARETA Th., ANDREWS J., NOONAN J., HARRIS W., SMITH N. et al.
ApJ. Letters, 889, L38
paper  arxiv  

Velocity of Dust Ejected from Interstellar Comet 2I/Borisov
2019 KOCHERGIN A., ZUBKO E., HUSARIK M., IVANOVA O., VIDEEN G. et al.
Res. Notes AAS, 3, 152
paper  

Are 2I/Borisov and Oort Cloud Comets Alike?
2019 SEKANIA Z.
Astron. J., submitted
arxiv  

2I/Borisov: A C2 depleted interstellar comet
2019 OPITOM C., FITZSIMMONS A., JEHIN E., MOULANE Y., HAINAUT O. et al.
Astron. & Astrophys., 631, L8
paper  arxiv  

The Difficulty of Predicting Stellar Occultations by Interstellar Comet 2I/Borisov
2019 BAMBERG D. & WELLS G.
Res. Notes AAS, 3, 159
paper  

Detection of a Water Tracer in Interstellar Comet 2I/Borisov
2019 McKAY A., COCHRAN A., DELLO RUSSO N. & DISANTI M.
ApJ. Letters, 889, L10
paper  arxiv  

Characterization of the Nucleus, Morphology and Activity of Interstellar comet 2I/Borisov by Optical and Near-Infrared GROWTH, Apache Point, IRTF, ZTF, Keck and HST Observations
2019 BOLIN B., LISSE C., KASLIWAI M., QUIMBY R., TAN H. et al.
ApJ. Letters, submitted
arxiv  

2I/Borisov: Marginal OH detection
2019 CROVISIER J., COLOM P., BIVER N. & BOCKELEE-MORVAN D.
IAU Electronic Telegram No. 4691
full text  

The Dynamics of Interstellar Asteroids and Comets within the Galaxy: an Assessment of Local Candidate Source Regions for 1I/`Oumuamua and 2I/Borisov
2019 HALLATT T. & WIEGERT P.
Astron. J., submitted
arxiv  

Pre-discovery Activity of New Interstellar Comet 2I/Borisov Beyond 5 AU
2019 YE Q., KELLEY M., BOLIN B., BODEWITS D., FARNOCCHIA D. et al.
Astron. J., 159, 77
paper  arxiv  

Initial Characterization of Interstellar Comet 2I/2019 Q4 (Borisov)
2019 JEWITT D. & LUU J.
ApJ. Letters, 886, L29
paper  

FLAMINGOS-2 Infrared Photometry of 2I/Borisov
2019 LEE Ch.-H., LIN H.-W., CHEN Y.-T. & YEN Sh.-F.
Res. Notes AAS, 3, 184
paper  arxiv  

The Nucleus of Interstellar Comet 2I/Borisov
2019 JEWITT D., HUI M.-T., KIM Y., MUTCHLER M., WEAVER H. & AGERWAL J.
ApJ. Letters, 888, L23
paper  arxiv  

Evolving Coma Morphology of Interstellar Comet 2I/Borisov with Deep HST Imaging
2019 BOLIN B.
MNRAS, submitted
arxiv  

Is Another Interstellar Visitor Headed Our Way?
2019 KING B.
Sky & Telescope
paper

High-drag Interstellar Objects and Galactic Dynamical Streams
2019 EUBANKS T.
ApJ. Letters, 874, L11
paper  

Is Interstellar Object 2I/Borisov a Stardust Comet? Predictions for the Post Perihelion Period
2019 EUBANKS T.
ApJ. Letters, submitted
arxiv