Imaging Borrelly

被引:53
作者
Soderblom, LA
Boice, DC
Britt, DT
Brown, RH
Buratti, BJ
Kirk, RL
Lee, M
Nelson, RM
Oberst, J
Sandel, BR
Stern, SA
Thomas, N
Yelle, RV
机构
[1] US Geol Survey, Flagstaff, AZ 86001 USA
[2] SW Res Inst, Space Sci & Engn Div, San Antonio, TX 78228 USA
[3] Univ Cent Florida, Dept Phys, Orlando, FL 32816 USA
[4] Univ Arizona, Dept Planetary Sci, Tucson, AZ 85721 USA
[5] Univ Arizona, Dept Astron, Tucson, AZ 85721 USA
[6] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
[7] Gernam Aerosp Ctr, Inst Plantary Sci, D-12489 Berlin, Germany
[8] Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA
[9] SW Res Inst, Dept Space Studies, Boulder, CO 80302 USA
[10] Inst Phys, Space Res & Planetol Div, CH-3012 Bern, Switzerland
基金
美国国家航空航天局;
关键词
comet; imaging; nucleus; topography; coma; dust jet; short-period comets; 19P/Borrelly; Borrelly; deep space 1; rotation axis; rotation pole;
D O I
10.1016/j.icarus.2003.07.008
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The nucleus, coma, and dust jets of short-period Comet 19P/Borrelly were imaged from the Deep Space 1 spacecraft during its close flyby in September 2001. A prominent jet dominated the near-nucleus coma and emanated roughly normal to the long axis of nucleus from a broad central cavity. We show it to have remained fixed in position for more than 34 hr, much longer than the 26-hr rotation period. This confirms earlier suggestions that it is co-aligned with the rotation axis. From a combination of fitting the nucleus light curve from approach images and the nucleus' orientation from stereo images at encounter, we conclude that the sense of rotation is right-handed around the main jet vector. The inferred rotation pole is approximately perpendicular to the long axis of the nucleus, consistent with a simple rotational state. Lacking an existing IAU comet-specific convention but applying a convention provisionally adopted for asteroids, we label this the north pole. This places the sub-solar latitude at similar to 60degrees N at the time of the perihelion with the north pole in constant sunlight and thus receiving maximum average insolation. (C) 2003 Elsevier Inc. All rights reserved.
引用
收藏
页码:4 / 15
页数:12
相关论文
共 40 条
  • [1] The ensemble properties of comets: Results from narrowband photometry of 85 comets, 1976-1992
    AHearn, MF
    Millis, RL
    Schleicher, DG
    Osip, DJ
    Birch, PV
    [J]. ICARUS, 1995, 118 (02) : 223 - 270
  • [2] BEAUCHAMP PM, 1994, P SOC PHOTO-OPT INS, V2214, P269, DOI 10.1117/12.177666
  • [3] BHASKARAN S, 2002, AIAA AAS ASTR SPEC C
  • [4] THE DARK SIDE OF IAPETUS - ADDITIONAL EVIDENCE FOR AN EXOGENOUS ORIGIN
    BURATTI, BJ
    MOSHER, JA
    [J]. ICARUS, 1995, 115 (02) : 219 - 227
  • [5] THE BARE NUCLEUS OF COMET NEUJMIN-1
    CAMPINS, H
    AHEARN, MF
    MCFADDEN, LA
    [J]. ASTROPHYSICAL JOURNAL, 1987, 316 (02) : 847 - 857
  • [6] NEAR photometry of asteroid 253 Mathilde
    Clark, BE
    Veverka, J
    Helfenstein, P
    Thomas, PC
    Bell, JF
    Harch, A
    Robinson, MS
    Murchie, SL
    McFadden, LA
    Chapman, CR
    [J]. ICARUS, 1999, 140 (01) : 53 - 65
  • [7] COLOR, ALBEDO AND NUCLEUS SIZE OF HALLEYS-COMET
    CRUIKSHANK, DP
    HARTMANN, WK
    THOLEN, DJ
    [J]. NATURE, 1985, 315 (6015) : 122 - 124
  • [8] A McDonald observatory study of Comet 19P/Borrelly: Placing the Deep Space 1 observations into a broader context
    Farnham, TL
    Cochran, AL
    [J]. ICARUS, 2002, 160 (02) : 398 - 418
  • [9] COMET SUGANO-SAIGUSA-FUJIKAWA (1983V) - A SMALL, PUZZLING COMET
    HANNER, MS
    NEWBURN, RL
    SPINRAD, H
    VEEDER, GJ
    [J]. ASTRONOMICAL JOURNAL, 1987, 94 (04) : 1081 - 1087
  • [10] A MODEL FOR INTENSITY PROFILES OF DUST JETS NEAR THE NUCLEUS OF COMET HALLEY
    HUEBNER, WF
    BOICE, DC
    REITSEMA, HJ
    DELAMERE, WA
    WHIPPLE, FL
    [J]. ICARUS, 1988, 76 (01) : 78 - 88