On the Rotation Period of (90377) Sedna

  title={On the Rotation Period of (90377) Sedna},
  author={B. Scott Gaudi and Krzysztof Zbigniew Stanek and Joel D. Hartman and Matthew J. Holman and Brian McLeod},
  journal={The Astrophysical Journal Letters},
  pages={L49 - L52}
We present precise, ~1%, r-band relative photometry of the unusual solar system object (90377) Sedna. Our data consist of 143 data points taken over eight nights in 2004 October and 2005 January 2005. The rms variability over the longest contiguous stretch of five nights of data spanning 9 days is only ~1.3%. This subset of data alone constrains the amplitude of any long-period variations with period P to be A ≲ 1%(P/20 days)2. Over the course of any given ~5 hr segment, the data exhibit… 


The dwarf planet (90377) Sedna is one of the most remote solar system objects accessible to investigations. To better constrain its surface composition and to investigate the possible heterogeneity

Ices on (90377) Sedna: confirmation and compositional constraints

We report measurements of reflectances of 90377 Sedna at $\lambda > 2.5$  μ m using the Infrared Array Camera (IRAC) on the Spitzer Space Telescope. Sedna orbits well beyond even the Kuiper Belt,

Transneptunian objects and Centaurs from light curves

Aims. We compile and analyze an extended database of light curve parameters scattered in the literature to search for correlations and study physical properties, including internal structure

Light Curves of 20-100 km Kuiper Belt Objects Using the Hubble Space Telescope

We report high-precision photometry of three small and one larger Kuiper Belt objects (KBOs) obtained with the Advanced Camera for Surveys on board the Hubble Space Telescope. The three small bodies


We present observations of 32 primarily bright, newly discovered Transneptunian objects (TNOs) observable from the Southern Hemisphere during 39 nights of observation with the Irénée du Pont 2.5 m

The Diverse Solar Phase Curves of Distant Icy Bodies. I. Photometric Observations of 18 Trans-Neptunian Objects, 7 Centaurs, and Nereid

We have measured the solar phase curves in B, V, and I for 18 trans-Neptunian objects (TNOs), 7 Centaurs, and Nereid and determined the rotation curves for 10 of these targets. For each body we have

Photometric Lightcurves of Transneptunian Objects and Centaurs: Rotations, Shapes, and Densities

We discuss the transneptunian objects and Centaur rotations, shapes, and densities as determined through analyzing observations of their short-term photometric lightcurves. The lightcurves are found

Future Surveys of the Kuiper Belt

The next decade of Kuiper belt object (KBO) science will be completely dominated by the output of two surveys. These two surveys, the Panoramic Survey Telescope and Rapid Response System (Pan-STARRS)

Colors and taxonomy of Centaurs and trans-Neptunian objects

Context. The study of the surface properties of Centaurs and trans-Neptunian objects (TNOs) provides essential information about the early conditions and evolution of the outer Solar System. Due to

“TNOs are Cool”: a survey of the trans-Neptunian region - VII. Size and surface characteristics of (90377) Sedna and 2010 EK139

We present estimates of the basic physical properties (size and albedo) of (90377) Sedna, a prominent member of the detached trans-Neptunian object population and the recently discovered scattered



Time-resolved Photometry of Kuiper Belt Objects: Rotations, Shapes, and Phase Functions

We present a systematic investigation of the rotational light curves of trans-Neptunian objects based on extensive optical data from Mauna Kea. Four of 13 objects (corresponding to 31%) in our sample

Discovery of a Candidate Inner Oort Cloud Planetoid

We report the discovery of the minor planet (90377) Sedna, the most distant object ever seen in the solar system. Prediscovery images from 2001, 2002, and 2003 have allowed us to refine the orbit

Detectability of extrasolar planets in radial velocity surveys

Radial velocity surveys are beginning to reach the time baselines required to detect Jupiter analogs, as well as sub-Saturn mass planets in close orbits. Therefore it is important to understand the

On the Slow Rotation of Asteroids

Abstract Asteroids with very slow rotation rates, up to 100 times slower than the mean for ordinary asteroids, are clearly a statistically distinct population from the rest. The cause of such slow

Regarding the Accretion of 2003 VB12 (Sedna) and Like Bodies in Distant Heliocentric Orbits

Recently, Brown et al. reported the exciting discovery of an ∼800 km radius object, (90377) Sedna, on a distant, eccentric orbit centered at ∼490 AU from the Sun. Here we undertake a first look

Scenarios for the Origin of the Orbits of the Trans-Neptunian Objects 2000 CR105 and 2003 VB12 (Sedna)

Explaining the origin of the orbits of 2000 CR105 (a = 230 AU, q = 44 AU) and 2003 VB12 (a = 531 AU, q = 74 AU, unofficially known as Sedna) is a major test for our understanding of the primordial

Evidence for an Extended Scattered Disk

Abstract By telescopic tracking, we have established that the transneptunian object (TNO) 2000 CR 105 has a semimajor axis of 220±1 AU and perihelion distance of 44.14±0.02 AU, beyond the domain

Fast and Slow Rotation of Asteroids

Abstract We present an analysis of the distribution of asteroid spin rates vs. size. The existence of significant populations of both slow and fast rotators among asteroids smaller than D=40 km, and

Stellar encounters as the origin of distant Solar System objects in highly eccentric orbits

It is shown that a passing star probably scattered Sedna from the Kuiper belt into its observed orbit, and the likelihood that a planet at 60–80 au can be scattered into Sedna's orbit is about 50 per cent; this estimate depends critically on the geometry of the fly-by.


The tasks of the DAOPHOT program, developed to exploit the capability of photometrically linear image detectors to perform stellar photometry in crowded fields, are discussed. Raw CCD images are