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C/1995 Q2

C/1995 Q2 (Hartley-Drinkwater)

CometClass Ecatalogued
Unknown

Not currently visible. Last report 11285 days ago at mag 39.1. Historic peak was mag 16.3. Typical backyard telescopes will not show it. HST, JWST, or an 8–10 m class telescope might recover it with a good ephemeris.

Active comet in COBS

JSONCSV

Right ascension

—

J2000

Declination

—

J2000

Estimated magnitude

39.1

Professional survey · COBS consensus

Confidence

33

Class E · priority 60

Observations

13

Arc unknown

Last observation

11285d ago

Wed, 25 Oct 1995 09:50:24 GMT · COBS consensus

Perihelion

1995-08-15

1.880 au

Peak window

1995-08-12 → 1995-09-01

COBS peak mag 16.3 on 1995-08-29 · perihelion 1995-08-15. Window is those dates ±3 days — not a light-curve fit.

Historic peak

16.3

COBS / analyzed peak 1995-08-29

Catalog ingest

11h ago

Venator last wrote this row 2026-09-16 13:20:18 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

1.880 au

e

0.9670

i

168.00°

Ω

301.00°

ω

314.00°

a

—

MOID

—

H

—

H0 / n

—

NEO score

—

PHA score

—

RMS

—

Elongation

—

Reporting sources

  • COBS comet list

    ok

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

Name history

  • C/1995 Q2 (Hartley-Drinkwater)

    Informal: Hartley-Drinkwater

    C/1995 Q2 · 2026-09-14 18:27:57 UTC → current

Discoverers

Contributors

  • Akimasa Nakamura

    CCD Observer · NAK01 · 3 reports · last 11285d ago

  • Charles S Morris

    Visual Observer · MOR · 3 reports · last 11336d ago

  • Akimasa Nakamura

    Visual Observer · NAK01 · 2 reports · last 11297d ago

  • Fumiaki Uto

    Visual Observer · UTO · 2 reports · last 11338d ago

  • Alan Hale

    Visual Observer · HAL · 1 reports · last 11338d ago

  • Kazuo Kinoshita

    Visual Observer · KIN · 1 reports · last 11321d ago

  • Toru Yusa

    Visual Observer · YUS · 1 reports · last 11339d ago

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