Correcting the Coordinates for Old Novae V707 Sco and V721 Sco

Abstract V707 Sco (Nova Sco 1922) and V721 Sco (Nova Sco 1950 no. 3) were both faint, poorly observed, classical novae near the Sting of the Scorpion. Both have substantially incorrect cataloged coordinates. I have recovered the correct coordinates by going back to the original Harvard archival plates. V707 Sco is at J2000 17:48:25.31, −36:36:37.0. V721 Sco is at J2000 17:42:14.62, −34:41:41.0. With these new positions, deep searches should turn up the quiescent counterparts, with their study adding to the large program of measuring the demographics of novae.

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Publication Details

Journal
Research Notes of the AAS
Published
2025-02-20
DOI
https://doi.org/10.3847/2515-5172/adb74e
Citations
1
Primary Topic
Astrophysical Phenomena and Observations
Type
article
Field-Weighted Citation Impact
1.15
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article

Correcting the Coordinates for Old Novae V707 Sco and V721 Sco

Bradley E. Schaefer
1 citations
Research Notes of the AAS
Astrophysical Phenomena and Observations
1.15
article

Correcting the Coordinates for Old Novae V707 Sco and V721 Sco

Bradley E. Schaefer
article en
1 citations

Abstract

Abstract V707 Sco (Nova Sco 1922) and V721 Sco (Nova Sco 1950 no. 3) were both faint, poorly observed, classical novae near the Sting of the Scorpion. Both have substantially incorrect cataloged coordinates. I have recovered the correct coordinates by going back to the original Harvard archival plates. V707 Sco is at J2000 17:48:25.31, −36:36:37.0. V721 Sco is at J2000 17:42:14.62, −34:41:41.0. With these new positions, deep searches should turn up the quiescent counterparts, with their study adding to the large program of measuring the demographics of novae.

Research Notes of the AASVol. 9(2)
Openalex Percentile: Top 21%
Astrophysical Phenomena and Observations
1.15
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Correcting the Coordinates for Old Novae V707 Sco and V721 Sco — Bradley E. Schaefer · Research Notes of the AAS (2025) | TGRS Research Map | TGRS