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WARNING: Invalid or missing GAIA IDs

Measurements for STF 1821 AB

 
WDS ID      Discovr     Comp  #    Sep      PA       Epoch      Obs  Telescope     Camera    Note
-------------------------------------------------------------------------------------------------
14135+5147  STF 1821    AB    1    13.64"   235.7°   B2025.334  HWI  120/900 APO   ASI678MM

-- Image of STF-1821-AB-taken with Equinox 120/900 APO --

WDS record for STF 1821 AB

wds_id                       : 14135+5147
discoverer_code              : STF
discoverer_number            : 1821
discoverer_components        : AB
date_first                   : 1779
date_last                    : 2023
num_of_obs                   : 216
pa_first                     : 240
pa_last                      : 236
sep_first                    : 12.5
sep_last                     : 13.7
mag_primary                  : 4.53
mag_secondary                : 6.62
spectral_type                : A7V+F1V
primary_proper_motion_RA     : 60
primary_proper_motion_DEC    : -11
secondary_proper_motion_RA   : 65
secondary_proper_motion_DEC  : -4
dm_number                    : +52 1782
notes                        : NO
precise_coordinate           : 141329.00+514723.8
                             : 14:13:29.00 +51:47:23.8

WDS Notes:
----------
N: Notes found in WDSNOT MEMO of WDS
O: Orbit described in WDSNOT MEMO and has entry in Orbit Catalog

Orbital Elements for STF 1821 AB

WDS:	STF 1821 AB	WDS ID/Discoverer
P:	10141.555	Orbital period (years)
a:	30.24041	Semi-major axis (arcseconds)
i:	93.267	Inclination (degrees)
Ω:	51.244	Longitude of ascending node (degrees)
T:	2902.040	Epoch of periastron passage (year)
e:	0.68651	Eccentricity
ω:	242.039	Argument of periastron (degrees)
Start-Year:	-3045.777	Year
End-Year:	7095.777	Year
Epoch:	2016.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF 1821 AB
Position:	141329.00+514723.8	Epoch-2000 right ascension and declination
WDS-ID:	14135+5147	WDS designation
Discoverer Code:	STF 1821 AB	Discover designation and components
ADS number:	9173	Aitken Double Star catalog
HD number:	124675	HD catalog number
Hipparcos number:	69483	Hipparcos catalog number
V1:	4.53	Magnitude of the primary
V2:	6.62	Magnitude of the secondary
Equinox:		Equinox
Date:	2015	Date of last observation
Orbit grade:	5	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate 8 = Interferometric 9 = Astrometric
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	Izm2019	Reference

Double Star Orbit for STF 1821 AB

WDS 6th Orbit including measures of STF 1821 AB

-- Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements) --

Legend:

Green plus signs:	Visual (micrometric) measures
Violet asterisks:	Photographic measures
Blue symbols:	Various interferometric techniques
Dot-dash line:	Indicates the line of nodes

Ephemeris of STF 1821 AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2016.00   13.634   235.52
--------------------------
-3100.00   29.731    46.85
-3000.00   29.216    46.69
-2900.00   28.676    46.53
-2800.00   28.112    46.37
-2700.00   27.525    46.19
-2600.00   26.916    46.01
-2500.00   26.285    45.82
-2400.00   25.634    45.62
-2300.00   24.962    45.41
-2200.00   24.270    45.19
-2100.00   23.560    44.95
-2000.00   22.831    44.70
-1900.00   22.084    44.44
-1800.00   21.320    44.15
-1700.00   20.539    43.84
-1600.00   19.742    43.51
-1500.00   18.930    43.15
-1400.00   18.102    42.76
-1300.00   17.261    42.33
-1200.00   16.405    41.85
-1100.00   15.537    41.33
-1000.00   14.657    40.74
-900.00   13.765    40.07
-800.00   12.863    39.31
-700.00   11.951    38.43
-600.00   11.031    37.41
-500.00   10.104    36.21
-400.00    9.172    34.76
-300.00    8.238    32.98
-200.00    7.304    30.74
-100.00    6.377    27.85
0.00    5.464    23.99
100.00    4.579    18.61
200.00    3.748    10.74
300.00    3.020   358.77
400.00    2.493   340.61
500.00    2.314   316.60
600.00    2.556   293.21
700.00    3.122   276.11
800.00    3.869   264.91
900.00    4.708   257.50
1000.00    5.590   252.39
1100.00    6.493   248.68
1200.00    7.399   245.88
1300.00    8.298   243.69
1400.00    9.180   241.92
1500.00   10.038   240.46
1600.00   10.861   239.23
1700.00   11.640   238.17
1800.00   12.359   237.23
1900.00   13.005   236.40
2000.00   13.556   235.64
2100.00   13.985   234.93
2200.00   14.256   234.25
2300.00   14.319   233.60
2400.00   14.105   232.93
2500.00   13.515   232.23
2600.00   12.415   231.44
2700.00   10.632   230.43
2800.00    8.008   228.87
2900.00    4.548   225.25
3000.00    0.751   182.88
3100.00    3.643    60.51
3200.00    7.437    55.60
3300.00   10.842    53.94
3400.00   13.839    53.05
3500.00   16.467    52.46
3600.00   18.774    52.03
3700.00   20.804    51.68
3800.00   22.595    51.40
3900.00   24.178    51.15
4000.00   25.581    50.93
4100.00   26.823    50.74
4200.00   27.924    50.56
4300.00   28.896    50.39
4400.00   29.753    50.24
4500.00   30.506    50.09
4600.00   31.164    49.95
4700.00   31.733    49.81
4800.00   32.222    49.68
4900.00   32.636    49.55
5000.00   32.980    49.43
5100.00   33.260    49.30
5200.00   33.478    49.18
5300.00   33.639    49.06
5400.00   33.746    48.94
5500.00   33.802    48.83
5600.00   33.810    48.71
5700.00   33.772    48.59
5800.00   33.691    48.47
5900.00   33.568    48.35
6000.00   33.406    48.23
6100.00   33.206    48.11
6200.00   32.970    47.99
6300.00   32.699    47.87
6400.00   32.395    47.74
6500.00   32.059    47.61
6600.00   31.692    47.48
6700.00   31.295    47.34
6800.00   30.870    47.20
6900.00   30.417    47.06
7000.00   29.938    46.91
7100.00   29.433    46.76

Observation Date:

Disclaimer

This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2026. Unless otherwise noted, all output generated by the Double Star Calculator including orbit diagrams, ephemerides, and analytical reports is licensed under CC BY 4.0.

Acknowledgements

The Double Star Calculator makes use of data from the European Space Agency (ESA) mission Gaia, processed by the Gaia Data Processing and Analysis Consortium (DPAC). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. Additionally, it incorporates data from the Washington Double Star Catalog, maintained at the U.S. Naval Observatory, and makes use of the Aladin Sky Atlas developed at CDS, Strasbourg Observatory, France. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France.

Report Information

Double Star Calculator:		Version 1.2 ($Rev: 2591 $)
Report created:		2026-09-09 08:34:05 +0200