comets.venator.space

Venator

Early warning for newly discovered comets and unconfirmed objects.

Self-host zip

Catalog

P/2009 Q4

P/2009 Q4 (Boattini)

CometClass Acatalogued

Active comet in COBS

Right ascension

09h 54m 00s

J2000

Declination

+13° 30′ 29″

J2000

Estimated magnitude

12.6

Amateur telescope · COBS

Confidence

100

Class A · priority 64

Observations

80.00 d arc

Last observation

14m ago

Tue, 08 Sep 2026 03:05:52 GMT

Perihelion

2020-12-26

1.310 au

Eccentricity

0.583

i 11.0°

Daily track

Estimated brightness (V mag)

Data confidence

Orbital elements

1.310 au

0.5830

11.00°

127.00°

320.00°

3.130 au

MOID

—

H0 / n

9.0 / 4

NEO score

—

PHA score

—

RMS

—

Elongation

20°

Reporting sources

COBS comet list
ok
Comet Observation Database current magnitudes, perihelion dates and activity flags.
COBS orbits
ok
Osculating elements and photometric parameters (H0, n) for active comets.