| 1. |
- Farnocchia, Davide, et al.
(författare)
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International Asteroid Warning Network Timing Campaign: 2019 XS
- 2022
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Ingår i: The Planetary Science Journal. - : Institute of Physics Publishing (IOPP). - 2632-3338. ; 3:7
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Tidskriftsartikel (refereegranskat)abstract
- As part of the International Asteroid Warning Network's observational exercises, we conducted a campaign to observe near-Earth asteroid 2019 XS around its close approach to Earth on 2021 November 9. The goal of the campaign was to characterize errors in the observation times reported to the Minor Planet Center, which become an increasingly important consideration as astrometric accuracy improves and more fast-moving asteroids are observed. As part of the exercise, a total of 957 astrometric observations of 2019 XS during the encounter were reported and subsequently were analyzed to obtain the corresponding residuals. While the timing errors are typically smaller than 1 s, the reported times appear to be negatively biased, i.e., they are generally earlier than they should be. We also compared the observer-provided position uncertainty with the cross-track residuals, which are independent of timing errors. A large fraction of the estimated uncertainties appear to be optimistic, especially when <0 2. We compiled individual reports for each observer to help identify and remove the root cause of any possible timing error and improve the uncertainty quantification process. We suggest possible sources of timing errors and describe a simple procedure to derive reliable, conservative position uncertainties.
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| 2. |
- Nedashkovskaya, Olga I., et al.
(författare)
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Description of Algoriphagus aquimarinus sp nov., Algoriphagus chordae sp nov and Algoriphagus winogradskyi sp nov., from sea water and algae, transfer of Hongiella halophila Yi and Chun 2004 to the genus Algoriphagus as Algoriphagus halophilus comb. nov and emended descriptions of the genera Algoriphagus Bowman et al. 2003 and Hongiella Yi and Chun 2004
- 2004
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Ingår i: INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY. - : Microbiology Society. - 1466-5026 .- 1466-5034. ; 54:5, s. 1757-1764
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Tidskriftsartikel (refereegranskat)abstract
- Four marine heterotrophic, aerobic, pink-pigmented and non-motile bacterial strains were isolated from sea water and algae collected in the Sea of Japan. In a polyphasic taxonomic study, 16S rRNA gene sequence analysis indicated that the strains were phylogenetically highly related to Algoriphagus ratkowskyi LMG 21435T, a member of the phylum Bacteroidetes. Further phenotypic, chemotaxonomic and genomic analyses revealed that the strains represent three novel species of the genus Algoriphagus, for which the following names are proposed: Algoriphagus aquimarinus sp. nov., Algoriphagus chordae sp. nov. and Algoriphagus winogradskyi sp. nov., with type strains KMM 3958T (=LMG 21971T=CCUG 47101T), KMM 3957T (=LMG 21970T=CCUG 47095T) and KMM 3956T (=LMG 21969T=CCUG 47094T), respectively. The species Hongiella halophila Yi and Chun 2004 is transferred to the genus Algoriphagus as Algoriphagus halophilus comb. nov. because of its close phylogenetic relatedness to Algoriphagus species and analogous phenotypic and chemotaxonomic properties. The above-mentioned novel species descriptions and species reclassification justify emended descriptions of the genera Algoriphagus and Hongiella.
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| 3. |
- Nedashkovskaya, Olga I., et al.
(författare)
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Maribacter gen. nov., a new member of the family Flavobacteriaceae, isolated from marine habitats, containing the species Maribacter sedimenticola sp nov., Maribacter aquivivus sp nov., Maribacter orientalis sp nov and Maribacter ulvicola sp nov.
- 2004
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Ingår i: INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY. - : Microbiology Society. - 1466-5026 .- 1466-5034. ; 54, s. 1017-1023
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Tidskriftsartikel (refereegranskat)abstract
- Six novel gliding, heterotrophic, Gram-negative, yellow-pigmented, aerobic, oxidase- and catalase-positive bacteria were isolated from the green alga Ulva fenestrata, sea water and a bottom sediment sample collected in the Gulf of Peter the Great, Sea of Japan. 16S rRNA gene sequence analysis revealed that the strains studied were members of the family Flavobacteriaceae. On the basis of their phenotypic, chemotaxonomic, genotypic and phylogenetic characteristics, the novel bacteria have been assigned to the new genus Maribacter gen. nov., as Maribacter sedimenticola sp. nov., Maribacter orientalis sp. nov., Maribacter aquivivus sp. nov. and Maribacter ulvicola sp. nov., with the type strains KMM 3903T (=KCTC 12966T=CCUG 47098T), KMM 3947T (=KCTC 12967T=CCUG 48008T), KMM 3949T (=KCTC 12968T=CCUG 48009T) and KMM 3951T (=KCTC 12969T=DSM 15366T), respectively.
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| 4. |
- Nedashkovskaya, Olga I., et al.
(författare)
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Ulvibacter litoralis gen. nov., sp nov., a novel member of the family Flavobacteriaceae isolated from the green alga Ulva fenestrata
- 2004
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Ingår i: INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY. - : Microbiology Society. - 1466-5026 .- 1466-5034. ; 54, s. 119-123
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Tidskriftsartikel (refereegranskat)abstract
- Two heterotrophic, aerobic, Gram-negative, pigmented and non-motile marine bacteria that were isolated from the green alga Ulva fenestrata were studied by polyphasic taxonomic methods. 16S rDNA sequence analysis indicated that strain KMM 3912T formed a distinct lineage within the family Flavobacteriaceae. On the basis of phenotypic, chemotaxonomic, genotypic and phylogenetic analyses, the novel bacteria were classified as Ulvibacter litoralis gen. nov., sp. nov. The type strain is KMM 3912T (=KCTC 12104T=CCUG 47093T).
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| 5. |
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