Coord 2000 | 20012-3835 |
Discov num | HDO 294 |
Comp | Coord arcsec 2000 | 20 01 12.74 -38 35 12.7 |
|||||
Date first | 1897 |
Date last | 2019 |
Obs | 63 |
||||||
Pa first | 120 |
Pa last | 33 |
P.A. Now (θ) | 36.7° |
||||||
Sep first | 1.5 |
Sep last | 1.3 |
Sep. Now (ρ) | 1.4" |
||||||
Mag pri | 8.08 |
Mag sec | 9.11 |
delta mag (ΔM) | 1.03 |
Spectral class | F3V (yellow-white) |
||||
Pri motion ra | +018 |
Sec motion ra | +018 |
||||||||
Pri motion dec | -070 |
Sec motion dec | -070 |
||||||||
Notes |
Precise pa | 33.2 |
Precise sep | 1.26 |
Constellation | Sagittarius |
SAO | 211734 |
||||
HIP | 98556 |
Tycho2 | 7947-00530-1 |
Gaia DR2 | 6690907208575405056 |
HD | 189386 |
||||
CD | CD-3813809 |
CP | CP-38 7919 |
Distance | 68.49 |
Distance ly | 223.41 |
||||
last precise pa | 33.2 |
last precise sep | 1.26 |
Period (P) | 4484.5y | Periastron (T) | 1922.73y | Semi-major axis (a) | 4.916a | |||
Eccentricity (e) | 0.9474 | Inclination (i) | 40.86° | Longitude of periastron (ω) | 137.62° | |||
Node (Ω) | 116.65° | Note | Grade | 5 | (1=Definitive, 9=Indet.) | |||
Equinox | 1900 | Last observation | 1974 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st. |
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|
![]() Measures: green=micrometric, blue=interferometric, purple=photographic |
|
coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
20012-3835 | HDO 294 | 2002 | 52 | 30 | 1.2 | 8.08 | 9.11 | F3V | NOD | 200112.74-383512.7 | |
20012-3835 | HDO 294 | 2008 | 53 | 30 | 1.2 | 8.08 | 9.11 | F3V | NOD | 200112.74-383512.7 | |
20012-3835 | HDO 294 | 2010 | 54 | 29 | 1.2 | 8.08 | 9.11 | F3V | NOD | 200112.74-383512.7 | |
20012-3835 | HDO 294 | 2013 | 57 | 31 | 1.2 | 8.08 | 9.11 | F3V | NO | 200112.74-383512.7 | |
20012-3835 | HDO 294 | 2016 | 60 | 35 | 1.3 | 8.08 | 9.11 | F3V | NO | 200112.74-383512.7 | |
20012-3835 | HDO 294 | 2017 | 61 | 34 | 1.3 | 8.08 | 9.11 | F3V | NO | 200112.74-383512.7 |