HD 138403
        
      
        
  
    | MISCLASSIFIED
    MILKY WAY 
 
| Constellation Apus
 | Equatorial coordinates α = 15 37 11.195
 δ =  -71 54 52.954
 | Galactic coordinates l = 315.1080°
 b = -13.0813°
 |  
 
| Suspected | 1974Ref |  
| Re-classified | 1977Ref |  
| Type | low excitation PNRef |  |  | 
     
    
    
      
      
  Symbiotic Catalogs
  
| Bidelman (1954) | - | Allen (1984) | - | Belzcyński et al. (2001) | - | 
| Gaposchkin (1957) | - | Kenyon (1986) | - | Akras et al. (2019) | - | 
| Boyarchuk (1969) | - | Vaidis (1988, 1991) | - | 
   
  
  
Position
| Right ascension (°) | 234.2966Ref | Parallax (mas) | 0.368±0.030Ref | Reddening E(B-V) (mag) | 0.13±0.01Ref, Note | 
| Declination (°) | -71.9147Ref | Distance (kpc) | 2.58Ref, Note, 2.55Ref, Note |  |  | 
| Galactic longitude (°) | 315.1080Ref | Proper motion in α (mas/yr) | -3.50±0.03Ref |  |  | 
| Galactic latitude (°) | -13.0813Ref | Proper motion in δ (mas/yr) | -4.16±0.03Ref |  |  | 
 
  
Notes
Allen & Glass (1974) proposed that this southern PN exhibits infrared luminosity indicative of a continuum similar to that observed in symbiotic and VV Cephei stars.
 
References
- Allen, D. A., Glass, I. S., 1974, MNRAS, 167, 337, 1974MNRAS.167..337A
- Hutton, R. G., Mendez, R. H., 1993, A&A, 267, L8, 1993A&A...267L...8H
- Koelbloed, D., 1962, BAN, 16, 163, 1962BAN....16..163K
- Thackeray, A. D., 1977, MNRAS, 180, 95, 1977MNRAS.180...95T
 
Last updated: April 30, 2022