Photometric and spectral analysis of MPC object J002E3

Lambert, John V.; Hamada, Koichi; Hall, D. T.; Africano, J. L.; Giffin, Maile; Luu, Kim; Kervin, P.; Jorgensen, K.

doi:10.1109/aero.2004.1368093

Cited by 2 publications

(4 citation statements)

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“…A strong correlation of the absorption features in the near-IR with the spectra of white paint containing titanium-oxide has been found (Jorgensen et al 2003). The high-resolution visible spectra of J002E3 were also compared to spectra of space-weathered rockets, showing a good agreement (Lambert et al 2004). …”

Section: Article Published By Edp Sciencesmentioning

confidence: 87%

“…An interesting attempt to model the photometric behaviour of J002E3 was also made by Lambert et al (2004). Using five lightcurves from different observing geometries they derived a spin vector, the angle of precession and the absolute size of the cylinder that best matched observations.…”

Section: Article Published By Edp Sciencesmentioning

confidence: 99%

“…One of the parameters of the orbital fit, the area to mass ratio (AMR), was found to be typical of artificial satellites (http://neo.jpl.nasa.gov/news/news136.html, last accessed 2008-09-01). The analysis of the past history of J002E3 indicated it might have visited the Earth-Moon system in 1971 and be a Saturn IV-B -the third stage of one of the Apollo program rocket boosters (Lambert et al 2004).…”

Section: Introductionmentioning

confidence: 99%

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Photometry of 2006 RH₁₂₀: an asteroid temporary captured into a geocentric orbit

Kwiatkowski¹,

Kryszczyńska²,

Polińska³

et al. 2009

A&A

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Aims. From July 2006 to July 2007 a very small asteroid orbited the Earth within its Hill sphere. We used this opportunity to study its rotation and estimate its diameter and shape. Methods. Due to its faintness, 2006 RH 120 was observed photometrically with the new 10-m SALT telescope at the SAAO (South Africa). We obtained data on four nights: 11, 15, 16, and 17 March 2007 when the solar phase angle remained almost constant at 74• . The observations lasted about an hour each night and the object was exposed for 7−10 s through the "clear" filter. Results. From the lightcurves obtained on three nights we derived two solutions for a synodical period of rotation: P 1 = 1.375 ± 0.001 min and P 2 = 2.750 ± 0.002 min. The available data are not sufficient to choose between them. The absolute magnitude of the object was found to be H = 29.9 ± 0.3 mag (with the assumed slope parameter G = 0.25) and its effective diameter D = 2−7 m, depending on the geometric albedo p V (with the most typical near-Earth asteroids albedo p V = 0.18 its diameter would be D = 3.3 ± 0.4 m). The body has an elongated shape with the a/b ratio greater than 1.4. It probably originates in low-eccentricity Amor or Apollo orbits. There is still a possibility, which needs further investigation, that it is a typical near-Earth asteroid that survived the aerobraking in the Earth's atmosphere and returned to a heliocentric orbit similar to that of the Earth.

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Section: Article Published By Edp Sciencesmentioning

confidence: 87%

Section: Article Published By Edp Sciencesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Photometry of 2006 RH₁₂₀: an asteroid temporary captured into a geocentric orbit

Kwiatkowski¹,

Kryszczyńska²,

Polińska³

et al. 2009

A&A

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“…13,14 2020 SO is a recent example of one such object that was misidentified as an NEO, with other examples including XL8D89E, 15 2018 AV2, 16 2023 NM, 17 and J002E3. Object J002E3 was the first heliocentric-orbiting, artificial object to be characterized with rotational periods and visible spectra through an extensive observational campaign in 2002 (Lambert et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Challenges in Identifying Artificial Objects in the Near-Earth Object Population: Spectral Characterization of 2020 SO

Battle,

Reddy,

Sanchez

et al. 2024

Planet. Sci. J.

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Since the dawn of the Space Age, hundreds of payloads have been launched into heliocentric space. As near-Earth object (NEO) surveys search deeper for small asteroids, more artificial objects in heliocentric orbits are being discovered. We now face a challenge to identify the true nature of these objects and avoid contaminating the NEO catalog. Here, we present the methods used to characterize one such object. 2020 SO was discovered by the Pan-STARRS1 survey on 2020 September 17. Originally classified as a NEO, the object’s artificial nature became evident due to its low velocity relative to Earth and solar radiation pressure affecting its orbit about the Sun. Based on a backward propagation of its orbit, 2020 SO is thought to be a Centaur rocket body (R/B) from the launch of the Surveyor 2 mission to the Moon. We characterized 2020 SO using a range of ground-based optical and near-infrared telescopes to constrain its true nature. We find that its reflectance spectrum is consistent with that of other Centaur R/B launched during a similar time frame, and we identify 1.4, 1.7, and 2.3 μm absorption bands consistent with polyvinyl fluoride used on the aft bulkhead radiation shield exterior of Centaur-D R/B at the time.

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Photometric and spectral analysis of MPC object J002E3

Cited by 2 publications

References 1 publication

Photometry of 2006 RH₁₂₀: an asteroid temporary captured into a geocentric orbit

Photometry of 2006 RH₁₂₀: an asteroid temporary captured into a geocentric orbit

Challenges in Identifying Artificial Objects in the Near-Earth Object Population: Spectral Characterization of 2020 SO

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Photometric and spectral analysis of MPC object J002E3

Cited by 2 publications

References 1 publication

Photometry of 2006 RH120: an asteroid temporary captured into a geocentric orbit

Photometry of 2006 RH120: an asteroid temporary captured into a geocentric orbit

Challenges in Identifying Artificial Objects in the Near-Earth Object Population: Spectral Characterization of 2020 SO

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Photometry of 2006 RH₁₂₀: an asteroid temporary captured into a geocentric orbit

Photometry of 2006 RH₁₂₀: an asteroid temporary captured into a geocentric orbit