00427-6537 I 440 (HD 4125)
00h 42m 41.37s -65° 36' 30.6" P.A. 269.00 sep 0.4 mag 7.27,8.75 Sp A6V dist. 177.3 pc (578.35 l.y.)
| Coord 2000 |
00427-6537 |
|
Discov num |
I 440 |
|
Comp |
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Coord arcsec 2000 |
00 42 41.37 -65 36 30.6 |
|
| Date first |
1907 |
|
Date last |
2009 |
|
Obs |
17 |
|
| Pa first |
220 |
|
Pa last |
269.4 |
|
P.A. Now (θ) |
269.4° |
|
| Sep first |
0.4 |
|
Sep last |
0.402 |
|
Sep. Now (ρ) |
0.402" |
|
| Mag pri |
7.27 |
|
Mag sec |
8.75 |
|
delta mag (ΔM) |
1.48 |
|
Spectral class |
A6V (white) |
|
| Pri motion ra |
+038 |
|
Sec motion ra |
+038 |
|
| Pri motion dec |
-003 |
|
Sec motion dec |
-003 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 4125 |
|
Constellation |
Tucana |
|
SAO |
248239 |
|
HIP |
3351 |
|
| Tycho2 |
8847-00332-1 |
|
HD |
4125 |
|
GC |
855 |
|
CP |
CP-66 50 |
|
| Distance |
177.3 |
|
Distance ly |
578.35 |
|
ORBITAL ELEMENTS
| Period (P) | 196y | |
Periastron (T) | 2142y | |
Semi-major axis (a) | 0.274a | |
| Eccentricity (e) | 0.65 | |
Inclination (i) | 157° | |
Longitude of periastron (ω) | 344° | |
| Node (Ω) | 57° | |
Notes | n | |
Reference | Hrt2010a | |
| Equinox | 2000 | |
Last observation | 2009 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
275.8 |
0.372 |
| 2001 |
275.1 |
0.375 |
| 2002 |
274.4 |
0.378 |
| 2003 |
273.7 |
0.382 |
| 2004 |
273.1 |
0.385 |
| 2005 |
272.4 |
0.388 |
| 2006 |
271.8 |
0.391 |
| 2007 |
271.2 |
0.394 |
| 2008 |
270.6 |
0.397 |
| 2009 |
269.9 |
0.399 |
| 2010 |
269.3 |
0.402 |
| 2011 |
268.8 |
0.405 |
| 2012 |
268.2 |
0.407 |
| 2013 |
267.6 |
0.410 |
| 2014 |
267.0 |
0.412 |
| 2015 |
266.5 |
0.414 |
| 2016 |
265.9 |
0.417 |
| 2017 |
265.3 |
0.419 |
| 2018 |
264.8 |
0.421 |
| 2019 |
264.3 |
0.423 |
| 2020 |
263.7 |
0.425 |
| 2021 |
263.2 |
0.427 |
| 2022 |
262.7 |
0.429 |
| 2023 |
262.1 |
0.430 |
| 2024 |
261.6 |
0.432 |
| 2025 |
261.1 |
0.433 |
| 2026 |
260.6 |
0.435 |
| 2027 |
260.1 |
0.436 |
| 2028 |
259.6 |
0.438 |
| 2029 |
259.1 |
0.439 |
| 2030 |
258.6 |
0.440 |
| 2031 |
258.1 |
0.441 |
| 2032 |
257.6 |
0.442 |
| 2033 |
257.1 |
0.443 |
| 2034 |
256.6 |
0.444 |
| 2035 |
256.1 |
0.445 |
| 2036 |
255.6 |
0.446 |
| 2037 |
255.1 |
0.447 |
| 2038 |
254.7 |
0.447 |
| 2039 |
254.2 |
0.448 |
| 2040 |
253.7 |
0.448 |
| 2041 |
253.2 |
0.449 |
| 2042 |
252.7 |
0.449 |
| 2043 |
252.3 |
0.449 |
| 2044 |
251.8 |
0.449 |
| 2045 |
251.3 |
0.450 |
| 2046 |
250.8 |
0.450 |
| 2047 |
250.4 |
0.450 |
| 2048 |
249.9 |
0.450 |
| 2049 |
249.4 |
0.449 |
| 2050 |
248.9 |
0.449 |
|
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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