POTENTIAL BINARY AND TUMBLING ASTEROIDS FROM THE CENTER FOR SOLAR SYSTEM STUDIES.

CCD photometric observations of four main-belt and one near-Earth asteroid were made in 2019. Of these, the Vestoid 2602 Moore and Hungaria (27568) 2000 PT6 were confirmed to be binary asteroids. The Hungaria 3880 Kaiserman is a suspected binary.

LIGHTCURVE ANALYSIS OF L5 TROJAN ASTERIODS AT THE CENTER FOR SOLAR SYSTEM STUDIES: 2019 JANUARY TO MARCH.

Lightcurves for four L Jovian Trojan asteroids were obtained at the Center for Solar System Studies (CS3) from 2019 January to March. The suspected binary Trojan, 2207 Antenor was observed again and a single attenuation event was detected.

MAIN-BELT ASTEROIDS OBSERVED FROM CS3: 2019 JANUARY - MARCH.

CCD photometric observations of 10 main-belt asteroids were obtained from the Center for Solar System Studies from 2019 January to March. In light of recent period analysis, images of 2120 Tyumenia obtained in 2004 were re-examined. The resulting analysis found a period of 17.

LIGHTCURVE ANALYSIS OF HILDA ASTEROIDS AT THE CENTER FOR SOLAR SYSTEM STUDIES: 2018 SEPTEMBER-DECEMBER.

Lightcurves for four Hilda asteroids were obtained at the Center for Solar System Studies (CS3) from 2018 September-November: 3514 Hooke, 3557 Sokolsky, 4495 Dassanowksy, and 10331 Peterbluhm. 4495 Dassanowksy appears to be a binary asteroid with a primary period of either 2.6314 hr or 5.

NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT THE CENTER FOR SOLAR SYSTEM STUDIES: 2018 SEPTEMBER-DECEMBER.

Lightcurves for 32 near-Earth asteroids (NEAs) obtained at the Center for Solar System Studies (CS3) from 2018 September-December were analyzed for rotation period and signs of satellites or tumbling.

MAIN-BELT ASTEROIDS OBSERVED FROM CS3: 2019 JULY TO SEPTEMBER.

CCD photometric observations of 25 main-belt asteroids were obtained at the Center for Solar System Studies (CS3) from 2019 July to September.

LIGHTCURVE ANALYSIS OF L4 TROJAN ASTERIODS AT THE CENTER FOR SOLAR SYSTEM STUDIES: 2019 JULY TO SEPTEMBER.

Lightcurves for 11 L Jovian Trojan asteroids were obtained at the Center for Solar System Studies (CS3) from 2019 July to September.

LIGHTCURVE ANALYSIS OF HILDA ASTEROIDS AT THE CENTER FOR SOLAR SYSTEM STUDIES: 2018 SEPTEBER - 2019 SEPTEMBER.

CCD photometric observations of three Hilda asteroids were made at the Center for Solar System Studies (CS3) in 2019 September. Analysis of the 2019 data for 4495 Dassanowsky, a reported binary (Warner and Stephens, 2019), found three periods, one being very long (431 h). The long period and a secondary one made it a potential member of the but, for the first time for a member of this class, a third period seems to be present.

NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT THE CENTER FOR SOLAR SYSTEM STUDIES: 2019 JULY-SEPTEMBER.

Lightcurves for 28 near-Earth asteroids (NEAs) obtained at the Center for Solar System Studies (CS3) from 2019 July to September were analyzed for rotation period, peak-to-peak amplitude, and signs of satellites or tumbling. 2059 Baboquivari, (90403) 2003 YE45, and 2016 AU130 are candidates for membership within the class. The 2019 data led to a seemingly unambiguous period of 4.

MAIN-BELT ASTEROIDS OBSERVED FROM CS3: 2019 APRIL TO JUNE.

CCD photometric observations of 19 main-belt asteroids were obtained at the Center for Solar System Studies (CS3) from 2019 April to June.

NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT THE CENTER FOR SOLAR SYSTEM STUDIES: 2019 MARCH-JULY.

Lightcurves for 38 near-Earth asteroids (NEAs) obtained at the Center for Solar System Studies (CS3) from 2019 March-July were analyzed for rotation period, peak-to-peak amplitude, and signs of satellites or tumbling.

LIGHTCURVE ANALYSIS OF HILDA ASTEROIDS AT THE CENTER FOR SOLAR SYSTEM STUDIES: 2019 APRIL-JUNE.

CCD photometric observations of seven Hilda asteroids were made at the Center for Solar System Studies (CS3) from 2019 April and June. Analysis of data for 1269 Rollandia and 3843 OISCA based on 2019 data led to review of our earlier results. For both objects, this resulted not in solving but deepening the mystery of the their true rotation periods.

LIGHTCURVE ANALYSIS OF L5 TROJAN ASTERIODS AT THE CENTER FOR SOLAR SYSTEM STUDIES: 2019 ARPIL TO JUNE.

Lightcurves for five L Jovian Trojan asteroids were obtained at the Center for Solar System Studies (CS3) from 2019 April to June.

NEAR-EARTH ASTEROID (152931) 2000 EA107: A PROBABLE BINARY.

CCD photometric observations of the near-Earth asteroid (152931) 2000 EA107 were made in 2019 March and April at the Center for Solar System Studies (CS3). Analysis of the data found that the asteroid is likely a binary. The primary period is = 4.

LIGHTCURVE ANALYSIS OF HILDA ASTEROIDS AT THE CENTER FOR SOLAR SYSTEM STUDIES: 2019 JANUARY-MARCH.

CCD photometric observations of three Hilda asteroids were made at the Center for Solar System Studies (CS3) from 2019 January-March. For 1038 Tuckia, the period solution was ambiguous at either = 18.020 h, amplitude 0.

MAIN-BELT ASTEROIDS OBSERVED FROM CS3: 2018 OCTOBER - DECEMBER.

CCD photometric observations of 18 main-belt asteroids were obtained from the Center for Solar System Studies from 2018 October to December. A pole solution was found for 4910 Kawasato of (λ, β, P) = (355°, 35°, 4.66271 h).

ANOTHER TRIO OF POSSIBLE VERY WIDE BINARY ASTEROIDS.

Lightcurve analysis of the near-Earth asteroids (442742) 2012 WP3, (523604) 2004 QB17, and 2018 RL indicate that they are potential members of a relatively rare class of "very wide binary asteroids." These objects feature a primary rotational period of tens to hundreds of hours and a secondary rotational period less than 24 hours, usually less than 10 hours. These three bring to 30 the number of suspected members of the class.

NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT THE CENTER FOR SOLAR SYSTEM STUDIES: 2019 JANUARY-APRIL.

Lightcurves for 24 near-Earth asteroids (NEAs) obtained at the Center for Solar System Studies (CS3) from 2019 January-April were analyzed for rotation period, peak-to-peak amplitude, and signs of satellites or tumbling. Two asteroids, (381677) 2009 BJ81 and (454177) 2013 GJ35, were found to have two periods that make them additional candidates for the class of asteroids. Another object with two periods was (18736) 1998 NU, 2.

ASTEROIDS OBSERVED FROM CS3: 2018 JULY - SEPTEMBER.

CCD photometric observations of 10 main-belt asteroids were obtained from the Center for Solar System Studies from 2018 July to September.

NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT THE CENTER FOR SOLAR SYSTEM STUDIES: 2018 JULY-SEPTEMBER.

Lightcurves for 45 Near-Earth asteroids (NEAs) obtained at the Center for Solar System Studies (CS3) from 2018 July-September were analyzed for rotation period and signs of satellites or tumbling. NEA 13553 Massakikoyama appears to be in non-principal axis rotation, i.e.

LIGHTCURVE ANALYSIS OF L4 TROJAN ASTERIODS AT THE CENTER FOR SOLAR SYSTEM STUDIES - 2018 JULY TO SEPTEMBER.

Lightcurves for five Jovian Trojan asteroids were obtained at the Center for Solar System Studies (CS3) from 2018 July to September.

7002 BRONSHTEN: A NEW MARS-CROSSING BINARY.

CCD photometric observations of the Mars-crosser asteroid 7002 Bronshten show it to be a binary system. The primary period is = 2.67025 ± 0.

LIGHTCURVE ANALYSIS OF HILDA ASTEROIDS AT THE CENTER FOR SOLAR SYSTEM STUDIES: 2017 APRIL THRU JULY.

Lightcurves for ten Hilda asteroids were obtained at the Center for Solar System Studies (CS3) from 2017 April thru July.

ASTEROIDS OBSERVED FROM CS3: 2017 JANUARY - MARCH.

CCD photometric observations of two Hungaria asteroids were obtained from the Center for Solar System Studies from 2017 January to March.