Catalogue record

HR 2618

21Eps CMa

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This opens a form with this exact target selected. Review your date, location and observing constraints before calculating. Nothing is calculated or saved by following the link.

A bounded starter sample: 50 bright-star records from HEASARC BSC5P, including 23 records with identified double-star components and historical separations, plus 108 OpenNGC deep-sky records associated with Messier numbers.

These are static catalogue measurements, not current sky positions or a complete census. Double-star records may describe the same pair; a pair is not necessarily a gravitationally bound binary. Separation dates and companion position angles are not available.

Missing measurements are unknown, not zero. Sizes can come from different wavelength bands and do not guarantee an object’s visible extent. No observability or equipment-resolution prediction is made here.

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Stable source identifier: bsc5p:hr2618
Source object type: star
Catalogue right ascension: 104.6562 degrees
Catalogue declination: -28.9722 degrees
Recorded magnitude: 1.5 · V (BSC5P; retain code/uncertainty flags)
Uncertainty flag: None reported; source code: None reported
Catalogue major / minor axes: Not reported / Not reported

Coordinate interpretation

Verified coordinate frame: FK5
Frame equinox: J2000.0
Catalogue reference epoch: Julian year 2000.0
Individual observation epoch: Not reported
RA proper motion, including cosine of declination: 4 × 10⁻³ arcsec/year
Declination proper motion: 3 × 10⁻³ arcsec/year

The reference epoch describes when the catalogue position is expressed. It does not establish when individual observations were taken. Equinox describes the orientation of the coordinate axes.

Angular proper motion is available for a bounded calculation, but has not been applied here. No distance, radial velocity, perspective acceleration or companion orbit is inferred.

This page shows unchanged catalogue coordinates. It does not calculate current sky positions or observability.

Source and reuse: bsc5p

Hoffleit and Warren (1991), Bright Star Catalog, 5th revised preliminary edition; NASA/GSFC HEASARC

Original source / pinned release · NASA government-works; HEASARC free-use policy

Credit Hoffleit and Warren and NASA/GSFC HEASARC when reusing these records. Retain the source flags and historical measurement limitations.

Selection: Vmag <= 2.0, excluding 14 documented nonstellar HR identifiers
Retrieved: 2026-10-01T21:40:09.869946+00:00
Reviewed subset SHA256: 7fe926d80b535f9422ca81f8f3fee1d6422de29adaecfbd2f14b1a93fe5134b9

Original file hashes

bsc5p.tdat: e2b2f8e9d615426f9478f88061235976143d49d8b25c6c15df3f3661c7095b53

Coordinate-frame evidence

CDS VizieR · V/50/catalog

Exact source identifiers matched: 50. Evidence retrieved: 2026-10-01.

Pinned response SHA256: a3f83273ccaecf913a0d8e077413062c20ce1fc01ce890c80615a9572d5f1be9

Original source fields and flags

Original strings preserve missing values, photometric flags and per-field source codes. Blank means no value was supplied. No proper motion or companion position is calculated here.

ads: 5654
ads_comp: Not supplied
alt_name: 21Eps CMa
bii: -11.3299
bv_color: -0.21
bv_uncert: Not supplied
cdec: -285820
cdec_1950: -285411
class: 2222
cra: 065837.5
cra_1950: 065639.5
dec: -28.9722
dec_1900: -28.83333333358
dec_1950: -28.903
dm_cat: CD
dm_num: -28 3666
fk5: 268
glat: -11.33
glon: 239.83
hd: 52089
hr: 2618
ir_flag: I
lii: 239.831
m_cnt: Not supplied
m_id: Not supplied
m_mdiff: 6.4
m_sep: 7.5
multiple: Not supplied
name: HR 2618
note: *
par_code: D
parallax: 0.001
pmdec: 0.003
pmra: 0.004
ra: 104.6562
ra_1900: 103.6737500032
ra_1950: 104.1647
radvel: 27
radvel_comm: Not supplied
ri_code: Not supplied
ri_color: -0.21
rotvel: 44
rotvel_comm: Not supplied
rotvel_uncert: Not supplied
sao: 172676
spect_code: Not supplied
spect_type: B2II
ub_color: -0.93
ub_uncert: Not supplied
var_id: Not supplied
vmag: 1.5
vmag_code: Not supplied
vmag_uncert: Not supplied