| WDS: | HDS521AB | WDS ID/Discoverer |
| P: | 21.040 | Orbital period (years) |
| a: | 0.2302 | Semi-major axis (arcseconds) |
| i: | 121.5 | Inclination (degrees) |
| Ω: | 220.4 | Longitude of ascending node (degrees) |
| T: | 2017.930 | Epoch of periastron passage (year) |
| e: | 0.712 | Eccentricity |
| ω: | 77.4 | Longitude of periastron (degrees) |
| Start-Year: | 2014.48 | Year |
| End-Year: | 2035.52 | Year |
| Epoch: | 2026.5 | Besselian Epoch |
Further data from the WDS Sixth Catalog of Orbits for HDS521AB |
||
| Position: | 040700.63-100000.4 | Epoch-2000 right ascension and declination |
| WDS-ID: | 04070-1000 | WDS designation |
| Discoverer Code: | HDS521AB | Discover designation and components |
| ADS number: | . | Aitken Double Star catalog |
| HD number: | 26040 | HD catalog number |
| Hipparcos number: | 19206 | Hipparcos catalog number |
| V1: | 7.29 | Magnitude of the primary |
| V2: | 8.60 | Magnitude of the secondary |
| Equinox: | Equinox | |
| Date: | Date of last observation | |
| Orbit grade: | 2 | Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate |
| Flags: | n | Flags |
| Ephemerides: | Ephemerides | |
| Code: | Tok2020e | Reference |
-- Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements) --
| Green plus signs: | Visual (micrometric) measures |
| Violet asterisks: | Photographic measures |
| Blue symbols: | Various interferometric techniques |
| Dot-dash line: | Indicates the line of nodes |
Year Sep[“] PA[°] --------------------------------------------- 2026.50 0.232 346.31 -------------------------- 2014.48 0.165 267.59 2014.58 0.164 266.35 2014.68 0.163 265.11 2014.78 0.162 263.84 2014.88 0.161 262.56 2014.98 0.160 261.27 2015.08 0.159 259.96 2015.18 0.158 258.63 2015.28 0.156 257.28 2015.38 0.155 255.91 2015.48 0.154 254.51 2015.58 0.152 253.09 2015.68 0.151 251.64 2015.78 0.149 250.16 2015.88 0.147 248.65 2015.98 0.145 247.09 2016.08 0.143 245.49 2016.18 0.141 243.84 2016.28 0.138 242.14 2016.38 0.136 240.36 2016.48 0.133 238.52 2016.58 0.129 236.58 2016.68 0.126 234.54 2016.78 0.122 232.37 2016.88 0.117 230.04 2016.98 0.112 227.52 2017.08 0.107 224.76 2017.18 0.101 221.68 2017.28 0.094 218.16 2017.38 0.086 214.06 2017.48 0.078 209.09 2017.58 0.068 202.81 2017.68 0.058 194.43 2017.78 0.048 182.54 2017.88 0.040 165.01 2017.98 0.035 140.61 2018.08 0.037 114.06 2018.18 0.044 92.96 2018.28 0.053 78.64 2018.38 0.064 68.94 2018.48 0.075 62.04 2018.58 0.085 56.85 2018.68 0.095 52.76 2018.78 0.104 49.42 2018.88 0.113 46.60 2018.98 0.121 44.17 2019.08 0.128 42.03 2019.18 0.135 40.12 2019.28 0.142 38.39 2019.38 0.148 36.81 2019.48 0.154 35.34 2019.58 0.159 33.98 2019.68 0.164 32.71 2019.78 0.169 31.51 2019.88 0.173 30.37 2019.98 0.177 29.29 2020.08 0.181 28.26 2020.18 0.185 27.27 2020.28 0.189 26.32 2020.38 0.192 25.40 2020.48 0.195 24.51 2020.58 0.198 23.65 2020.68 0.201 22.81 2020.78 0.204 22.00 2020.88 0.206 21.20 2020.98 0.208 20.43 2021.08 0.211 19.67 2021.18 0.213 18.93 2021.28 0.215 18.20 2021.38 0.217 17.49 2021.48 0.218 16.78 2021.58 0.220 16.09 2021.68 0.222 15.41 2021.78 0.223 14.74 2021.88 0.225 14.07 2021.98 0.226 13.42 2022.08 0.227 12.77 2022.18 0.228 12.13 2022.28 0.229 11.49 2022.38 0.230 10.86 2022.48 0.231 10.24 2022.58 0.232 9.62 2022.68 0.233 9.00 2022.78 0.234 8.39 2022.88 0.234 7.79 2022.98 0.235 7.18 2023.08 0.236 6.58 2023.18 0.236 5.98 2023.28 0.237 5.39 2023.38 0.237 4.80 2023.48 0.237 4.21 2023.58 0.238 3.62 2023.68 0.238 3.03 2023.78 0.238 2.44 2023.88 0.238 1.86 2023.98 0.239 1.27 2024.08 0.239 0.69 2024.18 0.239 0.10 2024.28 0.239 359.52 2024.38 0.239 358.94 2024.48 0.239 358.35 2024.58 0.239 357.77 2024.68 0.239 357.19 2024.78 0.238 356.60 2024.88 0.238 356.02 2024.98 0.238 355.43 2025.08 0.238 354.84 2025.18 0.238 354.25 2025.28 0.237 353.66 2025.38 0.237 353.07 2025.48 0.237 352.48 2025.58 0.236 351.88 2025.68 0.236 351.29 2025.78 0.236 350.69 2025.88 0.235 350.09 2025.98 0.235 349.49 2026.08 0.234 348.88 2026.18 0.234 348.27 2026.28 0.233 347.66 2026.38 0.233 347.05 2026.48 0.232 346.43 2026.58 0.232 345.81 2026.68 0.231 345.19 2026.78 0.230 344.57 2026.88 0.230 343.94 2026.98 0.229 343.31 2027.08 0.229 342.67 2027.18 0.228 342.03 2027.28 0.227 341.39 2027.38 0.227 340.74 2027.48 0.226 340.09 2027.58 0.225 339.44 2027.68 0.224 338.78 2027.78 0.224 338.12 2027.88 0.223 337.45 2027.98 0.222 336.78 2028.08 0.221 336.10 2028.18 0.221 335.42 2028.28 0.220 334.74 2028.38 0.219 334.05 2028.48 0.218 333.35 2028.58 0.218 332.65 2028.68 0.217 331.95 2028.78 0.216 331.24 2028.88 0.215 330.52 2028.98 0.214 329.80 2029.08 0.214 329.07 2029.18 0.213 328.34 2029.28 0.212 327.60 2029.38 0.211 326.86 2029.48 0.210 326.11 2029.58 0.209 325.35 2029.68 0.209 324.59 2029.78 0.208 323.82 2029.88 0.207 323.05 2029.98 0.206 322.27 2030.08 0.205 321.48 2030.18 0.204 320.69 2030.28 0.204 319.89 2030.38 0.203 319.08 2030.48 0.202 318.27 2030.58 0.201 317.45 2030.68 0.200 316.62 2030.78 0.199 315.79 2030.88 0.199 314.95 2030.98 0.198 314.10 2031.08 0.197 313.25 2031.18 0.196 312.39 2031.28 0.195 311.52 2031.38 0.195 310.64 2031.48 0.194 309.76 2031.58 0.193 308.87 2031.68 0.192 307.98 2031.78 0.191 307.07 2031.88 0.191 306.16 2031.98 0.190 305.24 2032.08 0.189 304.31 2032.18 0.188 303.38 2032.28 0.188 302.44 2032.38 0.187 301.49 2032.48 0.186 300.53 2032.58 0.185 299.57 2032.68 0.185 298.60 2032.78 0.184 297.62 2032.88 0.183 296.63 2032.98 0.183 295.64 2033.08 0.182 294.64 2033.18 0.181 293.63 2033.28 0.180 292.61 2033.38 0.180 291.58 2033.48 0.179 290.55 2033.58 0.178 289.51 2033.68 0.178 288.46 2033.78 0.177 287.40 2033.88 0.176 286.34 2033.98 0.176 285.26 2034.08 0.175 284.18 2034.18 0.174 283.09 2034.28 0.174 281.99 2034.38 0.173 280.89 2034.48 0.172 279.77 2034.58 0.172 278.65 2034.68 0.171 277.51 2034.78 0.170 276.37 2034.88 0.170 275.22 2034.98 0.169 274.05 2035.08 0.168 272.88 2035.18 0.167 271.70 2035.28 0.167 270.50 2035.38 0.166 269.30 2035.48 0.165 268.08
| Double Star Calculator: | Version 1.2 ($Rev: 2397 $) |
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| Report created: |
2026-06-25 15:17:48 |