739 observed NEAs and new 2–4 m survey statistics within the EURONEAR network

Văduvescu, O.; Birlan, Mirel; Tudorica, A.; Popescu, M.; Colas, F.; Asher, D. J.; Şonka, A.; Suciu, O.; Lacatus, D. A.; Paraschiv, Alin Rǎzvan; Badescu, T.; Tercu, O.; Dumitriu, A.; Chirila, A.; Stecklum, B.; Licandro, J.; Nedelcu, A.; Turcu, E.; Vachier, F.; Taris, F.; Bouquillon, L.; Núñez, F. Pozo; Saavedra, J.P. Colque; Unda-Sanzana, E.; Karami, Mansour; Khosroshahi, Habib G.; Toma, R.; Ledo, H.; Tyndall, A. A.; Patrick, L. R.; Föhring, Dóra; Muelheims, D.; Enzian, Georg; Klaes, Dominik; Lenz, Daniel; Mahlberg, P.; Ordenes, Yasna; Sendlinger, K.

doi:10.1016/j.pss.2013.06.026

Cited by 9 publications

(4 citation statements)

References 15 publications

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“…Since 2006, the European Near Earth Asteroids Research (EURONEAR) project aims to increase the European contribution in the NEO field using existing telescopes available in both hemispheres to the members of this network. In particular, it ameliorated orbits of about 1,500 known NEAs based on observations using mostly 1-2m class telescopes ( [26], [28], [30], [7]) and another 500 NEAs based on data mining of existing image archives of 2-8m class telescopes ( [27], [29], [31], [34]). This project involved many students and amateur astronomers who reduced the images and used Astrometrica software to visually search, measure and report all moving objects appearing in all frames, which included few dozen thousands main belt asteroids (MBAs).…”

Section: Related Workmentioning

confidence: 99%

NEARBY Platform for Automatic Asteroids Detection and EURONEAR Surveys

Gorgan,

Vaduvescu,

Stefanut

et al. 2019

Preprint

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The survey of the nearby space and continuous monitoring of the Near Earth Objects (NEOs) and especially Near Earth Asteroids (NEAs) are essential for the future of our planet and should represent a priority for our solar system research and nearby space exploration. More computing power and sophisticated digital tracking algorithms are needed to cope with the larger astronomy imaging cameras dedicated for survey telescopes. The paper presents the NEARBY platform that aims to experiment new algorithms for automatic image reduction, detection and validation of moving objects in astronomical surveys, specifically NEAs. The NEARBY platform has been developed and experimented through a collaborative research work between the

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Section: Related Workmentioning

confidence: 99%

NEARBY Platform for Automatic Asteroids Detection and EURONEAR Surveys

Gorgan,

Vaduvescu,

Stefanut

et al. 2019

Preprint

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“…Our observations were obtained at the Pic du Midi observatory in the Pyrenees mountains, France, located at an altitude of 2870 m. The observations were made in April 6–7, 2016 and January 17–18, 2018 using the T1M 1.05‐m telescope, an iKon‐L Andor CCD camera with a 2k × 2k E2V chip (pixel scale 0.22″ /pix), and Sloan Digital Sky Survey filters (Vaduvescu et al ). We used the 2 × 2 binning mode in order to avoid the oversampling of images.…”

Section: Observationsmentioning

confidence: 99%

Photometry of asteroids (5141), (43032), (85953), (259221), and (363599) observed at Pic du Midi Observatory

et al. 2018

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These are the first results of an observational program devoted to the complete physical data of asteroids that could produce or feed meteoroid streams. Our results are based on the optical observation at Pic du Midi observatory in April 6–7, 2016 and January 17–18, 2018. We will present the light curve of asteroid (259221) 2003 BA21, associated with Daytime Sextantids (221 DSX) and November θ Aurigids (390 THA); the light curves and colors of asteroid (363599) 2004 FG11, associated with Daytime ζ Perseids (172 ZPE) as well as g − r and g − i; and the corresponding reflectances for the (85953) 1999 FK21, associated with Daytime ξ Sagittariids (100 XSA). We will also present the colors for two additional objects, namely, (5141) Tachibana and (43032) 1999 VR26.

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“…Within the European Near Earth Asteroids Research (EURONEAR; Vaduvescu 2008), follow-up and recovery have been the main astrometric tools used for the orbital amelioration of NEAs, potentially hazardous asteroids (PHAs), and virtual impactors (VIs) (Birlan 2010;Vaduvescu 2011Vaduvescu , 2013.…”

Section: Introductionmentioning

confidence: 99%

280 one-opposition near-Earth asteroids recovered by the EURONEAR with the Isaac Newton Telescope

Văduvescu

Hudin²,

Močnik

et al. 2018

A&A

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Context. One-opposition near-Earth asteroids (NEAs) are growing in number, and they must be recovered to prevent loss and mismatch risk, and to improve their orbits, as they are likely to be too faint for detection in shallow surveys at future apparitions. Aims. We aimed to recover more than half of the one-opposition NEAs recommended for observations by the Minor Planet Center (MPC) using the Isaac Newton Telescope (INT) in soft-override mode and some fractions of available D-nights. During about 130 h in total between 2013 and 2016, we targeted 368 NEAs, among which 56 potentially hazardous asteroids (PHAs), observing 437 INT Wide Field Camera (WFC) fields and recovering 280 NEAs (76% of all targets). Methods. Engaging a core team of about ten students and amateurs, we used the THELI, Astrometrica, and the Find_Orb software to identify all moving objects using the blink and track-and-stack method for the faintest targets and plotting the positional uncertainty ellipse from NEODyS. Results. Most targets and recovered objects had apparent magnitudes centered around V ∼ 22.8 mag, with some becoming as faint as V ∼ 24 mag. One hundred and three objects (representing 28% of all targets) were recovered by EURONEAR alone by Aug. 2017. Orbital arcs were prolonged typically from a few weeks to a few years; our oldest recoveries reach 16 years. The O−C residuals for our 1854 NEA astrometric positions show that most measurements cluster closely around the origin. In addition to the recovered NEAs, 22 000 positions of about 3500 known minor planets and another 10 000 observations of about 1500 unknown objects (mostly main-belt objects) were promptly reported to the MPC by our team. Four new NEAs were discovered serendipitously in the analyzed fields and were promptly secured with the INT and other telescopes, while two more NEAs were lost due to extremely fast motion and lack of rapid follow-up time. They increase the counting to nine NEAs discovered by the EURONEAR in 2014 and 2015. Conclusions. Targeted projects to recover one-opposition NEAs are efficient in override access, especially using at least two-meter class and preferably larger field telescopes located in good sites, which appear even more efficient than the existing surveys.

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739 observed NEAs and new 2–4 m survey statistics within the EURONEAR network

Cited by 9 publications

References 15 publications

NEARBY Platform for Automatic Asteroids Detection and EURONEAR Surveys

NEARBY Platform for Automatic Asteroids Detection and EURONEAR Surveys

Photometry of asteroids (5141), (43032), (85953), (259221), and (363599) observed at Pic du Midi Observatory

280 one-opposition near-Earth asteroids recovered by the EURONEAR with the Isaac Newton Telescope

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