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Type Ic BL Supernova

The Story of Supernova SN2020aboq

An extraordinary stellar explosion that occurred Millions of Light-Years away in deep space.

⏱️ ~6 min deep read 🔬 24 Astrophysical Q&As 🔭 Viewing Guide Included 🪐 Constellation Columba
🔭 Deep Field (~2.1′ FOV) · DSS2 Optical (China-VO mirror)
● SN2020aboq Explosion Site

High-magnification deep optical view into SN2020aboq's host environment. Pan and scroll to explore the cosmic neighborhood where this star exploded.

⚡ Quick Observer Facts & Telemetry

IAU Transients DB
🌐 Distance to Earth
Millions of Light-Years
Lookback Cosmic Time
✨ Peak Brightness
Mag 18
Large Observatory
☀️ Peak Radiance
Hundreds of Millions of Suns
Combined Stellar Energy
🚀 Shock Velocity
Not measured
No spectral ejecta velocity
🌌 Host Galaxy
Field Transient Host
Center Coincident
🧭 Constellation
Columba
The Dove
💥 Explosion Physics
Type Ic BL
Core-Collapse Supergiant
📅 Discovered On
2020/12/04
ATLAS
CHAPTER I

A Core-Collapse Class Transient

On 2020/12/04, astronomers scanning the heavens flagged a sudden, violent pinpoint of light that had flared into visibility. Designated SN2020aboq, it represents a catastrophic stellar explosion classified as a Type Ic BL supernova.

SN2020aboq is classified in a core-collapse spectroscopic family. Events of this class are generally linked to the death of a massive star after successive nuclear burning stages, but no unique progenitor mass, lifetime, or pre-explosion identification is established for this object. The narrative of onion-shell fusion ending in iron-core collapse describes the class model, not a measured biography of SN2020aboq.

Astrophysical Mechanism Summary
Type: Type Ic BL • Progenitor: Massive Red/Stripped Supergiant Star • Velocity: Not measured
CHAPTER II

A Message Across Deep Cosmic Time

SN2020aboq has a luminosity distance of approximately Millions of Light-Years . Lookback time is unavailable without a usable redshift; do not equate luminosity distance with travel time.

Luminosity distance incorporates cosmic expansion and exceeds the light-travel distance. The two quantities must be reported separately.

CHAPTER III

Brightness Record

At the height of the outburst around 2020/12/17, SN2020aboq surged to a peak apparent magnitude of 18.

The total energy released by the cataclysm was on the order of 10⁵¹ to 10⁵³ ergs. Over 99% of this energy was emitted within the first 10 seconds as a dense burst of trillions of neutrinos, with only 1% driving the visible blast wave.

CHAPTER IV

The Radioactive Furnace: Why Supernovae Glow for Months

After peak, many supernovae are powered by the radioactive chain ⁵⁶Ni → ⁵⁶Co → ⁵⁶Fe. That is the standard model for Type Ic BL light curves; an object-specific nickel mass for SN2020aboq is not published here.

Nickel-56 decays to Cobalt-56 (half-life ≈6.1 days), then to stable Iron-56 (half-life ≈77.2 days), heating the ejecta from within. Typical class yields must not be quoted as measured values for this event.

CHAPTER V

Cosmic Kiln: Seeding the Elements of Life

Supernovae enrich galaxies with heavy elements. Events of SN2020aboq's class are associated with oxygen-group and intermediate-mass products (O, C, Ne, Mg, Si) in galactic chemical-evolution models. No measured elemental yields are published for SN2020aboq.

As Carl Sagan observed, "We are made of star-stuff" — a statement about nucleosynthesis in general, not a claim that atoms from this specific remnant are identified in the Solar System.

CHAPTER VI

Galactic Setting in Columba

No host galaxy is identified for SN2020aboq in this catalog record . In our terrestrial sky, it resides in the constellation Columba (The Dove) at Right Ascension 06:38:23.733 and Declination -35:13:29.13.

CHAPTER VII

The Scientific Surveillance Campaign

Following its discovery by ATLAS, observatories worldwide swung their lenses toward SN2020aboq. In the Open Supernova Catalog, SN2020aboq is documented across 0 photometric measurements and 0 spectroscopic epochs. These multi-wavelength observations allow astrophysicists to model the expanding photosphere, measure shock velocities, and probe circumstellar interactions.

CHAPTER VIII

Stargazer's Field Guide: Can You See It Tonight?

Can I see it tonight? Unknown — no measured brightness.

Discovered 5.9 years ago (2020/12/04). No reliable current brightness estimate — no photometry has been published.

Planetary Safety Note: Even though SN2020aboq was a titanic explosion, our planet sits safely outside the lethal 50–100 light-year kill zone. At a distance of Millions of Light-Years, the blast poses zero physical hazard to Earth's biosphere.

🌌 Cosmic Neighbors & Contemporaries 105,768+ transients indexed

Cataloged transients closest to SN2020aboq in discovery time, spatial sky neighborhood, and cosmological redshift:

⏱️ Closest in Time
AT2020abmo Exploded same day
Type Candidate 2020/12/04 · Mag 20.1
AT2020abnw Exploded same day
Type Candidate 2020/12/04 · Mag 19
AT2020abnd Exploded same day
Type Candidate 2020/12/04 · Mag 20.5
🔭 Closest on the Sky
AT2021fkz 34.7′ away
Type Candidate Discovered 2021/03/12
AT2021age 53.1′ away
Type Candidate Discovered 2021/01/13
Gaia18bhd 55.6′ away
Type Candidate Discovered 2018/05/15
🌌 Same Cosmic Era (Redshift)
No redshift match available (target z missing or no comparable redshifts in index).

❓ Frequently Asked Questions About SN2020aboq

Scientific & observational Q&As indexed from astronomical databases & the Open Supernova Catalog
🔍 24 of 24
What type of supernova is SN2020aboq and what kind of star exploded? Astrophysics & Progenitor
SN2020aboq is a stripped-envelope supernova (Type Ic BL), consistent with core collapse after loss of the outer hydrogen (and for Ic, helium) envelope. The specific progenitor channel for this object is not uniquely determined by the spectral type alone.
What was the progenitor star doing in the millions of years leading up to SN2020aboq? Astrophysics & Progenitor
The specific progenitor of SN2020aboq has not been observed. Events of this spectroscopic class are generally associated with massive-star core collapse after successive nuclear burning stages (hydrogen → helium → carbon → neon → oxygen → silicon → iron). Typical lifetimes of such progenitors are tens of millions of years, but that is a class expectation—not a measured age or evolutionary track for this star. No pre-explosion imaging identification is cited in the available record for SN2020aboq.
How far away is SN2020aboq from Earth and how old is the light reaching us? Cosmic Distance & Time
The distance to SN2020aboq has not been measured. No spectroscopic redshift or luminosity distance is published for this transient, so neither its distance from Earth nor its lookback time can be stated. A redshift requires a spectrum, and a photometric redshift requires multi-band imaging that has not been reported. Without a distance, its intrinsic luminosity and total energy release are also undetermined. Check the sources below for follow-up spectroscopy or host-galaxy identification.
What does the cosmological redshift of SN2020aboq tell us about the expansion of space? Cosmic Distance & Time
No spectroscopic redshift has been measured for SN2020aboq. Without a published z, its place in the Hubble flow, recession velocity, and lookback time cannot be stated. A redshift requires a spectrum (or a well-calibrated photometric redshift from multi-band imaging). Check the sources below for follow-up spectroscopy.
How bright did SN2020aboq become at its peak, and how many Suns does that equal? Explosion Energetics
At peak brightness, SN2020aboq achieved an apparent magnitude of 18 around 2020/12/17.
How much total energy was released by SN2020aboq, and where did that energy go? Explosion Energetics
Core-collapse events of this broad class are often discussed with a ~10⁵³ erg gravitational binding energy of which ~99% may escape as neutrinos—again a class scale, not a measured budget for SN2020aboq.
How fast are the supernova ejecta and shockwave of SN2020aboq expanding through space? Explosion Energetics
No ejecta velocity is measured for SN2020aboq. Blast-wave speed is obtained from Doppler shifts of spectral absorption features (e.g. Si II λ6355 for Type Ia), not from cosmological redshift. Any recession velocity derived from z describes Hubble flow, not the explosion debris. Type Ic BL events typically show ejecta speeds of order ~12,500 km/s near maximum, but that class scale is not a measurement of SN2020aboq.
What powers the prolonged glow of SN2020aboq weeks and months after detonation? Radioactive Engine
Classified core-collapse light curves are often sustained after peak by radioactive ⁵⁶Ni → ⁵⁶Co → ⁵⁶Fe decay, with typical nickel yields of order 0.05–0.15 solar masses—again a class scale, not a measured yield for SN2020aboq. Shock-breakout heating may dominate the earliest optical flash; without a published bolometric fit, neither nickel mass nor the dominant power source is established for this event.
What chemical elements did SN2020aboq create and disperse into the universe? Nucleosynthesis & Elements
Events of SN2020aboq's broad spectroscopic class are discussed in galactic chemical evolution as sources of oxygen-group and intermediate-mass elements (and, for some channels, iron-peak material). No measured elemental yields are published for SN2020aboq.
Did SN2020aboq leave behind a black hole, a neutron star, or nothing at all? Cosmic Remnant
A core-collapse explosion associated with SN2020aboq's class forges an ultra-dense compact stellar remnant at the center of the detonation. If the progenitor had an initial mass under ~20 solar masses, it left behind a neutron star (pulsar)—packing the mass of our entire Sun into a city-sized sphere barely 20 kilometers wide, spinning dozens or hundreds of times per second. If the progenitor exceeded ~25–30 solar masses, gravity overcame neutron degeneracy pressure, creating a permanent stellar-mass black hole.
What will SN2020aboq's explosion site look like in 1,000 to 10,000 years? Cosmic Remnant
Supernova remnants in general evolve through free-expansion, Sedov–Taylor, and radiative phases over centuries to millennia, sometimes becoming bright X-ray shells and occasionally compressing nearby molecular clouds. These are standard remnant-evolution models, not forecasts measured for SN2020aboq. Whether this site will trigger star formation, reach particular X-ray temperatures, or match Cassiopeia A depends on local density and magnetic field—none of which are constrained by the data shown here.
In which galaxy did SN2020aboq explode, and where is it located relative to the galactic center? Galactic Environment
No host galaxy is identified for SN2020aboq in this catalog record. A blank host field means the association is unresolved here—it does not establish that the host is uncataloged, resolved in imaging, or securely linked by astrometry. Possible states (unidentified, hostless candidate, imaging detection without a catalog name, or a securely matched cataloged galaxy) require separate evidence that is not present in this field.
Where is SN2020aboq located in the night sky and which constellation is it in? Sky Coordinates
In the celestial sphere, SN2020aboq is located at Right Ascension 06:38:23.733 and Declination -35:13:29.13, situated in the constellation Columba (The Dove). Because its declination is -35:13:29.13, it is favorably placed for Southern Hemisphere observatories.
How much Milky Way interstellar dust obscures our view of SN2020aboq? Interstellar Dust
Along this line of sight, the catalog records a Milky Way foreground color excess of E(B−V) = 0.1016 mag (source: Analytical Galactic Disk Model (IAU)), corresponding to roughly A_V ≈ 0.31 mag for R_V = 3.1. Band-specific corrections (e.g. A_r) differ from A_V and should be applied when available. Map-based values (IRSA / Schlafly & Finkbeiner 2011) must not be claimed unless that map was actually queried.
Across which photometric filter bands was SN2020aboq monitored? Astronomical Observations
No calibrated photometry is published for SN2020aboq. Without multi-epoch flux measurements, neither a light curve nor a peak magnitude can be established. Follow-up imaging from survey alert streams would be required to map its brightness evolution.
What did astronomical spectroscopy reveal about SN2020aboq's chemical makeup? Astronomical Observations
No spectrum has been published for SN2020aboq. Without spectroscopy, its chemical composition, expansion velocity, and physical classification cannot be established. Classification spectra from follow-up observatories would be required to identify diagnostic absorption and emission lines.
Who discovered SN2020aboq and how was it first detected? Discovery & History
SN2020aboq was officially reported on 2020/12/04 by ATLAS. Discoveries are typically flagged by high-cadence robotic survey telescopes (such as ATLAS, ZTF, Pan-STARRS, ASAS-SN, or Gaia) and worldwide amateur astronomers scanning the night sky, followed by rapid spectroscopic classification by international observatories.
How many scientific publications and observatories have contributed data to SN2020aboq? Scientific Research
Data for SN2020aboq are compiled from international astronomical notices, the IAU Transient Name Server (TNS), and peer-reviewed astrophysical journals.
What other names and survey identifiers exist for SN2020aboq? Cross-Identifications
Throughout global alert streams and survey databases, SN2020aboq has also been designated as: AT2020aboq, ATLAS20bgoz, Gaia20fuk. These cross-matched identifiers allow astronomers to cross-reference observations across the Zwicky Transient Facility (ZTF), the Asteroid Terrestrial-impact Last Alert System (ATLAS), Pan-STARRS, Gaia Photometric Science Alerts, and the IAU Transient Name Server (TNS).
How does SN2020aboq contribute to measuring the Hubble Constant and the scale of the cosmos? Cosmology & Distance Ladder
As a core-collapse supernova, SN2020aboq provides independent cosmological distance calibrations via the Expanding Photosphere Method (EPM) and the Standard Candle Method for Type II supernovae (SCM-II). By correlating the physical expansion speed of the photosphere (measured via spectroscopic Doppler shifts) with its photometric color temperature, astronomers determine direct geometric distances independent of secondary distance ladders.
Could gravitational waves or neutrinos from SN2020aboq be detected on Earth? Multi-Messenger Astronomy
Core-collapse supernovae like SN2020aboq are premier targets for multi-messenger astrophysics! During the collapse of the iron core, an intense burst of 10⁵⁸ neutrinos escaped into space hours before the shock broke out through the stellar surface (as famously seen in SN 1987A). Furthermore, violent core asymmetries and non-axisymmetric core bounce can emit high-frequency gravitational waves detectable by advanced interferometers (LIGO, Virgo, KAGRA) for events within the Milky Way and Local Group.
How does SN2020aboq compare to famous historical supernovae like SN 1987A or the Crab Supernova? Historical Comparison
Compared to historical landmarks like SN 1987A in the Large Magellanic Cloud (168,000 light-years away, naked-eye peak m = 2.9) or the Crab Supernova of 1054 (6,500 light-years away), the distance to SN2020aboq is not measured, so no such comparison can be drawn. While historical naked-eye supernovae occurred within our Milky Way or its immediate satellites, modern discoveries like SN2020aboq allow astrophysicists to probe diverse galactic environments, metallicities, and stellar populations across the broader universe.
Can I see SN2020aboq tonight with a backyard telescope or binoculars? Backyard Observation
Unknown — no measured brightness. SN2020aboq was discovered 2162 days ago (2020/12/04), but no calibrated photometry is published for it, so its current apparent magnitude cannot be stated. Without a magnitude there is no basis for a telescope-aperture recommendation. Use the coordinates and airmass chart above to plan a follow-up observation and report what you measure.
Does the radiation or shockwave from SN2020aboq pose any threat to Earth? Planetary Safety
Earth is in no danger from SN2020aboq. The astrophysical 'lethal kill zone' for a supernova to damage our ozone layer is roughly 50 to 100 light-years. This transient is far outside the solar neighbourhood: it was discovered by a wide-field survey at a magnitude only reachable for an extragalactic object, and any transient in our own galaxy within that radius would have appeared far brighter than the ~18th magnitude reported here. Its exact distance is unmeasured, but the detection brightness alone rules out any nearby threat.
Data sourced from IAU TNS, ALeRCE, WISeREP, and the Open Supernova Catalog. View All General Astrophysics FAQs →
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