02012+1634 BU 515 (HD 12315)
02h 01m 09.75s +16° 33' 54.5" P.A. 280.00 sep 0.4 mag 7.70,11.23 Sp F2 dist. 76.75 pc (250.36 l.y.)
| Coord 2000 |
02012+1634 |
|
Discov num |
BU 515 |
|
Comp |
|
|
Coord arcsec 2000 |
02 01 09.75 +16 33 54.5 |
|
| Date first |
1878 |
|
Date last |
2011 |
|
Obs |
19 |
|
| Pa first |
243 |
|
Pa last |
279.5 |
|
P.A. Now (θ) |
279.5° |
|
| Sep first |
1.5 |
|
Sep last |
0.379 |
|
Sep. Now (ρ) |
0.379" |
|
| Mag pri |
7.70 |
|
Mag sec |
11.23 |
|
delta mag (ΔM) |
3.53 |
|
Spectral class |
F2 (yellow-white) |
|
| Pri motion ra |
-042 |
|
Sec motion ra |
-043 |
|
| Pri motion dec |
-026 |
|
Sec motion dec |
-026 |
|
| Notes |
O
(Orbital solution) |
|
rPM=0.02 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 12315 |
|
Constellation |
Aries |
|
SAO |
92750 |
|
HIP |
9434 |
|
| Tycho2 |
1207-00660-1 |
|
Gaia DR2 |
90783037268826368 |
|
HD |
12315 |
|
ADS |
1605 |
|
| BD |
BD+15 292 |
|
Distance |
76.75 |
|
Distance ly |
250.36 |
|
ORBITAL ELEMENTS
| Period (P) | 220y | |
Periastron (T) | 2024.505y | |
Semi-major axis (a) | 0.795a | |
| Eccentricity (e) | 0.762 | |
Inclination (i) | 63.2° | |
Longitude of periastron (ω) | 346.3° | |
| Node (Ω) | 74.7° | |
Notes | | |
Reference | Tok2025b | |
| Equinox | | |
Last observation | 2024 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
269.9 |
0.644 |
| 2001 |
270.7 |
0.621 |
| 2002 |
271.5 |
0.597 |
| 2003 |
272.4 |
0.573 |
| 2004 |
273.3 |
0.547 |
| 2005 |
274.4 |
0.521 |
| 2006 |
275.5 |
0.495 |
| 2007 |
276.9 |
0.467 |
| 2008 |
278.3 |
0.440 |
| 2009 |
280.0 |
0.411 |
| 2010 |
281.9 |
0.382 |
| 2011 |
284.2 |
0.352 |
| 2012 |
286.8 |
0.321 |
| 2013 |
290.1 |
0.290 |
| 2014 |
294.1 |
0.259 |
| 2015 |
299.2 |
0.228 |
| 2016 |
306.0 |
0.197 |
| 2017 |
315.0 |
0.169 |
| 2018 |
327.4 |
0.145 |
| 2019 |
343.9 |
0.128 |
| 2020 |
3.6 |
0.122 |
| 2021 |
23.4 |
0.127 |
| 2022 |
40.2 |
0.142 |
| 2023 |
53.3 |
0.161 |
| 2024 |
63.8 |
0.178 |
| 2025 |
72.7 |
0.190 |
| 2026 |
80.8 |
0.194 |
| 2027 |
88.8 |
0.193 |
| 2028 |
97.2 |
0.187 |
| 2029 |
106.2 |
0.179 |
| 2030 |
116.1 |
0.172 |
| 2031 |
126.6 |
0.167 |
| 2032 |
137.5 |
0.166 |
| 2033 |
148.3 |
0.169 |
| 2034 |
158.5 |
0.176 |
| 2035 |
167.6 |
0.187 |
| 2036 |
175.6 |
0.202 |
| 2037 |
182.5 |
0.218 |
| 2038 |
188.3 |
0.237 |
| 2039 |
193.3 |
0.257 |
| 2040 |
197.6 |
0.277 |
| 2041 |
201.2 |
0.298 |
| 2042 |
204.4 |
0.320 |
| 2043 |
207.1 |
0.342 |
| 2044 |
209.6 |
0.363 |
| 2045 |
211.7 |
0.385 |
| 2046 |
213.6 |
0.407 |
| 2047 |
215.4 |
0.429 |
| 2048 |
216.9 |
0.450 |
| 2049 |
218.4 |
0.471 |
| 2050 |
219.7 |
0.492 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
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