Stellar aberration, invariant velocities, and Earth’s hodograph

The features of reference frame, concomitant to the cosmic microwave background, immobile relatively cosmic microwave background, are considered. It is shown that the features of reference frame, concomitant to the cosmic microwave background (CMB), are determined by its properties. Any other object in the Universe and reference frame concomitant to it, is immersed in the CMB and moves relative to the reference frame concomitant to microwave background radiation. The zero pecular velocity of the reference frame concomitant to the microwave background radiation is analogous to the zero temperature on the Kelvin scale. Time in it is most rapid in relation to the time in any other reference frame, observable and measurable in any of them. The features of time, pecular speed, relative speed of two inertial RF, stellar aberration, and Doppler effect in the reference frame concomitant to the microwave background radiation are considered. According to the determined relative velocity of the two reference systems and the peculiar velocity of the reference system with the observer, the components of their relative velocity are determined. Determining the components of the relative velocity of the reference frames with determining the synchronous time for all points at any time in the reference frame concomitant to microwave background radiation, allows us to investigate the possibility of determining the speed of light "one way" and using it to navigate vehicles in distant space. Stability of angular location of heterogeneities of CMB in reference frame concomitant to CMB, allows us to use these heterogeneities for the increase of exactness of astronomic reference frames HCRF and ICRF.

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Stellar Aberration from the Standpoint of the Radiation Convection Hypothesis

Physics Essays ◽

10.4006/1.3028919 ◽

1991 ◽

Vol 4 (3) ◽

pp. 368-372 ◽

Cited By ~ 1

Author(s):

Thomas E. Phipps

Keyword(s):

Stellar Aberration

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Stellar Aberration and Red Shift

The Astrophysical Journal ◽

10.1086/143356 ◽

1932 ◽

Vol 75 ◽

pp. 64 ◽

Cited By ~ 6

Author(s):

G. van Biesbroeck

Keyword(s):

Red Shift ◽

Stellar Aberration

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StarNAV: Autonomous Optical Navigation of a Spacecraft by the Relativistic Perturbation of Starlight

Sensors ◽

10.3390/s19194064 ◽

2019 ◽

Vol 19 (19) ◽

pp. 4064 ◽

Cited By ~ 6

Author(s):

John Christian

Keyword(s):

Autonomous Navigation ◽

Space Exploration ◽

Spectral Shift ◽

Mission Design ◽

Limiting Factor ◽

Optical Navigation ◽

Promising Technique ◽

Naturally Occurring ◽

Future Space ◽

Stellar Aberration

Future space exploration missions require increased autonomy. This is especially true for navigation, where continued reliance on Earth-based resources is often a limiting factor in mission design and selection. In response to the need for autonomous navigation, this work introduces the StarNAV framework that may allow a spacecraft to autonomously navigate anywhere in the Solar System (or beyond) using only passive observations of naturally occurring starlight. Relativistic perturbations in the wavelength and direction of observed stars may be used to infer spacecraft velocity which, in turn, may be used for navigation. This work develops the mathematics governing such an approach and explores its efficacy for autonomous navigation. Measurement of stellar spectral shift due to the relativistic Doppler effect is found to be ineffective in practice. Instead, measurement of the change in inter-star angle due to stellar aberration appears to be the most promising technique for navigation by the relativistic perturbation of starlight.

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A formal approach to stellar positions in solar barycentric coordinates

Symposium - International Astronomical Union ◽

10.1017/s0074180900148211 ◽

1986 ◽

Vol 114 ◽

pp. 213-213

Author(s):

J.F. Lestrade

Keyword(s):

Point Of View ◽

Barycentric Coordinates ◽

Global Approach ◽

Formal Approach ◽

General Relativistic ◽

Stellar Aberration

In astrometry, construction of stellar catalogues favors solar barycentric coordinates. Classically, they are calculated by linearly removing stellar aberration and annual parallaxes from measured quantities yielded by Earth-bound instruments. A global approach is proposed to account for those two effects from a more general relativistic point of view. Implications for VLBI measurements and HIPPARCOS measurements of stellar positions are discussed.

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