Wikipedia

User:Nrco0e/sandbox

< User:Nrco0e

Sources to add edit

Formulas edit

Pole orientation edit

  • Ecliptic longitude (λ) → Ascending Node (Ω): Ω = 90 + λ
  • Ecliptic latitude (β) → Inclination (i): i = 90 – β

Binary systems edit

  • Effective diameter Deff = sqrt(D1+D2)
  • System density (ρsys=(m1+m2)/(V1+V2)) ≠ Component density (ρ=m/V)

Pages to create edit

To-do edit

Abandoned, I realized I'm not going to follow half of these anyway

Miscellany and silly astronomy lore edit

Old MPC site edit

4942 Munroe edit

99942 Apophis edit

Sedna controversy edit

  • Alain Maury - https://www.spaceobs.com/en/Alain-Maury-s-Blog/How-he-believed-he-killed-Pluto-alone-and-why-it-had-it-coming
  • In attempt to thwart Brown's eventual "illegal" naming of Sedna, Reiner M. Stoss proposed to name his discovery (60175) 1999 VQ1 after Canadian singer Katy Sedna before the numbering of 2003 VB12. The so-called "Yahoo chat group" mentioned by Brown in his book and blog was referring to the MPML.
    • Stoss's disclosed naming proposal, "short and crispy":Discovered 1999 Nov. 3 at the Starkenburg Observatory, Heppenheim.
      Named in honour of Sedna, the Inuit goddess of the sea.       [6]
      • The proposal was then revised to: Discovered 1999 Nov. 3 at the Starkenburg Observatory, Heppenheim. Named in honour of Katy Sedna, singer and songwriter. Raised in Africa, the US and Europe she studied songwriting and vocal improvisation at Berklee College of Music in Boston, USA. She has a most unique way of presenting her songs, revealing her playful spirit and her deep sense of optimism.
      • Stoss was informed (or in his case, "blackmailed") by a CSBN member to change the proposed name from "Sedna" to "Katysedna" by September 28, otherwise his options are to change the name or withdraw the proposal. The proposal was subsequently withdrawn and Stoss was adjured by the CSBN (Jana Ticha) to apologize for his "objectionable behavior."
    • Marsden's response to Stoss's proposal: "That is an even nicer try, and I have included your proposal in the set of names for consideration for the July MPCs." [7]
    • Marsden, continued: "But this whole sorry episode shows that your time-wasting tactics. These annoyed many people, and they have accomplished essentially nothing." [8]
    • "Fact is that my second naming proposal for the singer Sedna (which could not be rejected lawfully) was submitted months before 2003 VB12 got even numbered. It was intentionally withheld until 2003 VB12 would become eligible for naming. It was therefore not "quickly" that the secretary of the CSBN realized something but he withheld the rightful proposal for months until the unlawful proposal could get the formal vote. It was a plot between Brown (discoverer of 2003 VB12 aka Sedna), Marsden (director of MPC and secretary of CSBN) and Ticha (chair of CSBN) right from the start." [9]
  • Bill J. Gray was particularly against Stoss's crusade against Brown's premature naming of Sedna.
    • I'm sure someone is thinking of doing this [proposing the name "Sedna"]. If so, I'd ask you to please reconsider. We've had enough embarrassments over the last few years. [10]

Boyajian's Star edit

MPC errors edit

  • Premature designation 2022 AA = P/2019 M2 given in 2019 (now deleted) MPMLMPECMPC

The Last Stargazers edit

V774104 edit

I don't know if I'm supposed to edit here, but you may be interested in my summary of the situation: Quora post Renerpho (talk) 02:21, 9 August 2022 (UTC)

Mars rediscovered ATel edit

Comet fragment numbering edit

  • Fragments are ordered by RA position [14]

Eris edit

  • First preliminary name was K31021C [15][16]

Huya edit

https://arxiv.org/pdf/2205.12882.pdf

  • Total of 49 observers across Europe and Asia. 37 telescopes located within nominal predicted path: 21 positives, 16 misses. An additional 12 telescopes were located far from the path to find rings or moons.
  • Area equivalent diameter 411.0 ± 7.3 km, consistent with Herschel estimate of 406 ± 16 km.
  • Albedo 0.079 ± 0.004 based on corrected individual abs mag of Hv=5.31
  • New rotation period 6.725 ± 0.006 h obtained from recent observations combined with older datasets
  • Aliases of new rotation period still cannot be ruled out
  • Size corresponds to likely density of 0.8 g/cm3
  • Maclaurin or Jacobi ellipsoid? Non-equilibrium? (True shape unknown)
  • Upper limit atmospheric pressure 10 nbar
  • Likely not in hydrostatic equilibrium
  • Moon not detected

2003 VS2 edit

https://arxiv.org/pdf/2205.12878.pdf

WISE 0855−0714 edit

6478 Gault edit

Activity edit

2014 UN271 draft edit

Orbit and origin edit

Stellar encounters, aphelion distance, last perihelion distance/passage, important milestones during orbit, ucertainties, non-gravs[1]

Notes edit

References edit

  1. ^ https://ui.adsabs.harvard.edu/#abs/2021arXiv211215353D/abstract

Cite error: A list-defined reference named "MPEC-2021-M53" is not used in the content (see the help page).
Cite error: A list-defined reference named "MPEC-2021-M83" is not used in the content (see the help page).
Cite error: A list-defined reference named "ATel14733" is not used in the content (see the help page).
Cite error: A list-defined reference named "ATel14759" is not used in the content (see the help page).
Cite error: A list-defined reference named "ATel14917" is not used in the content (see the help page).
Cite error: A list-defined reference named "Bernardinelli2021a" is not used in the content (see the help page).
Cite error: A list-defined reference named "Ridden-Harper2021" is not used in the content (see the help page).
Cite error: A list-defined reference named "Bernardinelli2021b" is not used in the content (see the help page).
Cite error: A list-defined reference named "Farnham2021" is not used in the content (see the help page).
Cite error: A list-defined reference named "Lellouch2022" is not used in the content (see the help page).
Cite error: A list-defined reference named "CometInterceptor" is not used in the content (see the help page).

Cite error: A list-defined reference named "Eubanks" is not used in the content (see the help page).

Largest comets with measured diameters (and colors) edit

  1. 95P/Chiron (218±20 km – Herschel; dimensions 190 × 143 km (not used in this graphic; 218 km is used as the max semi-axis instead, with the long/short axis ratio taken from occultation constraints) ... B–V = 0.60, V–R = 0.32, p = 0.16
  2. C/2014 UN271 (Bernardinelli-Bernstein) (137±17 km – ALMA) ... B–V = 0.65 (assumed), V–R = 0.46, p = 0.049
  3. C/2002 VQ94 (LINEAR) (96±4 km – photometry, assumed albedo) ... B–V = 1.07, V–R = 0.54, p = 0.08
  4. Comet Hale-Bopp (74±6 km – Herschel; dimensions a/b ≥ 1.72) ... B–V = 0.65 (assumed), V–R = 0.48, p = 0.081
  5. 167P/CINEOS (66.17±22.90 km – NEOWISE) ... B–V = 0.80, V–R = 0.57, p = 0.053
  6. 174P/Echeclus (64.6±1.6 km – Herschel; dimensions a/b = 1.32, b/c ~ 1.1) ... B–V = 0.93, V–R = 0.48, p = 0.052
  7. 29P/Schwassmann-Wachmann (64.6±6.2 km – Spitzer) ... B–V = 0.78, V–R = 0.50, p = 0.04 (assumed, colors for coma only)
  8. C/2011 KP36 (Spacewatch) (47.3±17.5 km – NEOWISE + spectra) ... B–R = 1.9

Comparison:

Kepler-1708 starbox edit

Kepler-1708
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Cygnus
Right ascension 19h 47m 17.787s[1]
Declination 43° 37′ 29.43″[1]
Apparent magnitude (V) 15.925±0.010
Astrometry
Proper motion (μ) RA: −0.770±0.057[1] mas/yr
Dec.: −5.005±0.059[1] mas/yr
Parallax (π)0.5730 ± 0.0340 mas[1]
Distance5584±245 ly
(1712±75[2] pc)
Details
Mass1.088±0.072[2] M☉
Radius1.117±0.064[2] R☉
Luminosity (bolometric)1.521+0.316
−0.262[2][a] L☉
Surface gravity (log g)4.37+0.04
−0.05[3] cgs
Temperature6157+231
−202[3] K
Metallicity [Fe/H]0.0+0.2
−0.2[2] dex
Age3.16+3.29
−1.61[2][b] Gyr
Other designations
Gaia DR2 2078801971283008128, KIC 7906827, TIC 272716898, 2MASS J19471778+4337295, WISE J194717.78+433729.2[4]
Database references
SIMBADdata

Kepler-1708 is a 16th-magnitude solar-mass star located in the constellation of Cygnus approximately 5,600 light years away. Its mass is approximately 9% more massive and radius 12% larger than that of the Sun.

Active asteroids edit

Double neutron star binary systems edit

Irregular moons edit

Jovian satellite mean elements (84 moons; 2023) Ananke group consists of two tight subclusters:

  • Ananke Core Cluster (a=20.75-21.00 Mm, i=148.3°) = Ananke itself + others
  • Hermippe Cluster (a=20.95-21.12 Mm i=150.2°) = Hermippe, Thelxinoe, S/2003 J 2, S/2003 J 12, S/2021 J 1

Other outliers of the Ananke group:

  • Iocaste
  • Helike
  • S/2016 J 1
  • Orthosie
  • S/2003 J 18
  • S/2017 J 9
  • Eurporie (doesn't belong probably)

Proteus edit

News edit

IAUCs edit

Publications edit

no cost too great

  1. ^ a b c d e Cite error: The named reference GaiaEDR3 was invoked but never defined (see the help page).
  2. ^ a b c d e f Cite error: The named reference Kipping2022 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Kawahara2019 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Simbad was invoked but never defined (see the help page).


Cite error: There are <ref group=lower-alpha> tags or {{efn}} templates on this page, but the references will not show without a {{reflist|group=lower-alpha}} template or {{notelist}} template (see the help page).

Retrieved from "https://en.wikipedia.org/w/index.php?title=User:Nrco0e/sandbox&oldid=1188586730"