Movement of dwarf planet "Makemake"


Date & Time: Feb 1 2019, from 28:37 to 28:46 JST(+0900), 3min.×4shots
Feb 2 2019, from 28:22 to 28:28 JST(+0900), 3min.×3shots
Optical: Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3)
with BaaderPlanetarium Moon&Skyglow filter
Auto-guided with Meade LX200 Equatorial & Pictor 201XT
Digital Camera: Canon EOS 6D (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(5472×3648)
Sensitivity...ISO4000


(136472) Makemake
Semi-major axis45.354 au (6.785Bln km)
Perihelion distance37.948 au (5.677Bln km)
Aphelion distance52.762 au (7.893Bln km)
Orbital eccentricity0.163
Orbital period305.45 yrs.
Parameters when photographed:
R.A. (2000.0)13h 07m 40.4s
  →13h 07m 39.0s
Dec. (2000.0)+23°50' 50"
  →+23°51' 27"
Geocentric distance52.02 au (7.782Bln km)
Heliocentric distance52.54 au (7.860Bln km)
Magnitude16.9
Dwarf planet "Makemake" is one of Trans-Neptunian Objects (TNOs) classified in the Plutoid, discovered on Mar 31, 2005. Makemake is revolving an elliptical orbit with a period of 305 years outside of the Pluto (247 years in period); the orbit tilts 29 degrees from the plane of the ecliptic. A diameter of Makemake has been estimated as approximately 1400 km, about 60% of the Pluto. The dwarf planet was named after God created the Easter island, registered as the third Plutoid next to the Pluto and the Eris in July 2008.
This image has displayed by turning the celestial north direction upward. When I photographed, Makemake had a visual brightness of 16.9th magnitude and was moving toward NNW slowly in the central region of Coma Berenices. Comparing two shots taken 24-hours apart, you can detect a Makemake's apparent movement of approximately 40 arc seconds.



Movement of Eris
Movement of Haumea

Copyright(c) 2019 by Naoyuki Kurita, All rights reserved.
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