Menu

HIP 92027 — Double Star in Serpens

Observable Double Star Excellent (60/100)

Sep: 2.6", Companion: mag 6.7

Magnitude 5.8m DoubleStar Serpens (Ser) Visible
Star Map
+ List + Plan Star Hop

Observe

1Physical Properties

Magnitude 5.83
Spectral Type A1V+A1V
Star Color White (B-V 0.04)
Distance 544 ly

2Position & Identifiers

RA 18h 45m 28.4s
Dec +05° 29' 59.0"
Constellation Serpens (Ser)
HR 7048
HIP 92027
HD 173495
SAO 123886
Double Cat 11640
SIMBAD

3How easy to split?

Primary 5.8 mag Companion 6.7 mag Separation 2.6″
Sign in and configure your equipment and default location to see a personalized row.
Telescope Bortle 3 Bortle 4 Bortle 5
80mm refr. Hard+ Hard+ Hard+
150mm Newt. Easy Easy Easy
C8 203mm Easy Easy Easy
Easy Medium Hard Very hard Impossible

Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs

4Visibility

Set a location in User Settings to see visibility data.

Best season May – Jul (peak: Jun)

5Multiple Star System Quadruple

Components 4 (quadruple)
Component IDs AB
Separation 2.6″
Companion Mag 6.7
Companion Sp A1V
Position Angle 121°
Star Colors A: White B: White
Discoverer STF2375
ADS 11640AB, >5600y. Both components close binaries. Speckle interferometry 1985.5 gives sep. Aa = 0.141"; | Bb = 0.137".

Separation over time

Period: 5000.0 y Eccentricity: 0.500 Now: 2.6", PA 121° + 0.01" in 5 years
0.00" 0.77" 1.5" 2.3" 3.1" 2025 2030 2035 2040 2045 2.6"

Apparent separation over time, computed from ORB6 orbital elements. Steep curves indicate fast-changing pairs — catch them while they're splittable.

Eyepiece View

Log in to set your own equipment
80x Dawes: 1.9″ TFOV: 0.6°
Realistic = true angular size
N E 121°

A: 5.8 · B: 6.7 · Sep: 2.6″ · PA: 121° · N up, E right

Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 2.3″

Explore

6

Size Comparison

Querying VizieR for stellar data…
7

Compare Stars

8

Spectral Classification

9

Hertzsprung-Russell Diagram

Loading HR diagram…
Read: The Hertzsprung-Russell Diagram — Reading Stars Like a Map
10

Stellar Lifecycle

11

Blackbody Spectrum

12

Stellar Absorption Spectrum

Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.

13

Stellar Fusion

Discover

14Stellar Notes

ADS 11640A. A1, A4.
15

Light Travel Time Machine

16

Relativistic Travel

Nearby in the Sky

Other targets within a few degrees — pan your scope a little and keep exploring.

Visibility scores assume a 150 mm Newton at Bortle 4.

IC 4756
Easy
Open cluster
Open Cluster mag 5.0 1.6° Serpens
Alya
HIP 92946; Theta1 Serpentis; 63 Serpentis
Easy
Easy double, sep 22.4″
Double Star mag 4.62 3.0° Serpens
Theta Ser
HIP 92951; Theta2 Serpentis; 63 Serpentis
Easy
Easy double, sep 405.6″
Double Star mag 4.98 3.0° Serpens
X Oph
Easy
Mira-type variable, range 5.9–9.2
Variable Star mag 6.40 3.8° Ophiuchus
NGC 6749
Medium
Globular cluster — dense ball of ancient stars
Globular Cluster mag 11.1 6.1° Aquila
5 Aql
Easy
Easy double, sep 12.5″
Double Star mag 5.90 6.5° Aquila
59 Ser
Easy
Easy double, sep 3.9″
Double Star mag 5.21 7.0° Serpens
Show on Map

Explore Nightbase

Related knowledge, tools, and stories — no observation planning required.

Double Stars — A Guide for Observers
Two suns where one appeared — how to find, split, and appreciate the night sky's finest pairs. From Albireo's gold-and-blue to the Sirius B challenge.
Article
Serpens
Mythology, bright stars, and deep-sky highlights.
Constellation
Mars
Polar caps, dust storms, and observing its oppositions.
Deep dive
}