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Venator

Early warning for newly discovered comets and unconfirmed objects.

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P/2004 V5

P/2004 V5 (LINEAR-Hill)

CometClass Ecatalogued
Northern hemisphere

Not visible to typical instruments. Current estimate mag 18.3. Visual and most CCD amateur setups will not see it. Space telescopes or large ground telescopes are the remaining path.

Active comet in COBS

JSONCSV

Right ascension

07h 15m 51s

J2000

Declination

+35° 50′ 40″

J2000

Estimated magnitude

18.3

Professional survey · COBS consensus

Confidence

33

Class E · priority 60

Observations

0

Arc unknown

Last observation

Not in feed

COBS consensus does not publish an observer timestamp. Catalog ingested 14m ago.

Perihelion

2027-08-04

4.430 au

Peak window

2027-08-01 → 2028-02-09

COBS peak mag 17.4 on 2028-02-06 · perihelion 2027-08-04. Window is those dates ±3 days — not a light-curve fit.

Historic peak

17.4

COBS / analyzed peak 2028-02-06

Catalog ingest

14m ago

Venator last wrote this row 2026-09-17 00:30:04 UTC

Light curve

Brightness over time (V mag)

Gold = reported observations. Steel dashed family = ensemble (nominal / outburst / fade / disruption).

Tail length

Converted to degrees from COBS (d / arcmin / arcsec). Empty until analysis has pulled the archive.

No tail measures stored yet for this object.

Ensemble is a first-pass H0/n photometric model plus observed samples — not a trained ML forecast yet. The background analyzer walks the catalog one object at a time so COBS is not flooded. Disruption track rises after perihelion to stand in for solar-wind stripping.

Orbital elements

q

4.430 au

e

0.4510

i

19.30°

Ω

47.70°

ω

87.10°

a

8.070 au

MOID

—

H

—

H0 / n

8.0 / 4

NEO score

—

PHA score

—

RMS

—

Elongation

69°

Reporting sources

  • COBS comet list

    ok

    Comet Observation Database magnitudes and perihelion data for the full COBS list (active and inactive).

  • COBS orbits

    ok

    Osculating elements and photometric parameters (H0, n) for active comets.

Name history

  • P/2004 V5 (LINEAR-Hill)

    Informal: LINEAR-Hill

    P/2004 V5 · 2026-09-13 22:21:22 UTC → current

Discoverers

  • Hill

    Discoverer · parsed-name · 2026-09-15 02:51:49 UTC → current

  • LINEAR

    Discoverer · parsed-name · 2026-09-15 02:51:49 UTC → current

  • LINEAR-Hill

    Discoverer · parsed-name · 2026-09-15 02:51:49 UTC → current

  • LINEAR-Hill

    Discoverer · parsed-name · 2026-09-13 22:21:22 UTC → 2026-09-15 02:51:49 UTC

Contributors

  • No recent COBS visual or CCD reports linked yet.

Pips are observation weight on this object (log of report count). Hover for catalog-wide weight.