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ZHR Perseid outburst 1992. Dr. Peter Jenniskens (Leonids 98: Meteor Outburst Mission Homepage) Meteor Stream Activity; II. Meteor Outbursts. Astronomy and Astrophysics 295, 206-235 (1995) |
This page contains the DMS datalist on meteor streams and activity profile data.
Contents:
General information with tableDMS Datalist of Meteorstreams
The DMS Datalist of Meteor Streams is an abridged and edited version of extensive data on meteor
stream activity published in [Jenniskens P., 1994: Astronomy and Astrophysics 287, pp. 990 - 1013].
The list is based on observations by Dutch DMS and Australian NAPO-MS members (with observations
by others added in a few occasions) from 1981 onwards. Raw data were reduced by Peter Jenniskens.
Listed are: stream designation; Solar longitude (1950.0) in degrees at which stream maximum occurs; B-
value for ascending and descending slopes of the activity profile (see discussion below); Zenith Hourly
Rate (ZHR) at stream maximum; RA (in degrees: to get hours and minutes, realise that 15 degrees in
RA corresponds to 1 hour in RA) and declination of stream radiant during maximum, and radiant drift
in delta RA and delta declination per degree Solar longitude; initial velocity Vinf of meteoroids in km/s
and the population index chi.
All listed data are equinox 1950.0. For more details on the mentioned streams and meteor stream
structures, including mass influx rates, turn to [Jenniskens 1994]
When marked "rev.", data of the stream in question are under revision. They will be incorporated as
soon as the new data have appeared in print. For the Leonids, this will be in March 1996: for the Lyrids
and Aurigids this is anticipated for the summer of 1996.
ZHR Leonids 1966 and 1969. Dr. Peter Jenniskens: Meteor Stream Activity; II. Meteor Outbursts. Astronomy and Astrophysics 295, 206-235 (1995)
stream Sol Long max B ZHRmax RA (drift) DEC (drift) Vinf chi
Bootids 282.62 +- 0.03 1.8 133 +- 16 232 (+0.6) +45 (-0.3) 43 2.5*
gamma Velids 285.0 +- 1.0 0.12 2.4 +- 0.4 124 (+0.5) -47 (-0.2) 35 3.0
alpha Crucids (294.7) (0.11) (3.0 +- 0.8) 192 (+1.1) -63 (-0.4) 50 2.9
alpha Hydrusids (299) - <2 137 (+0.7) 11 (-0.3) 44 2.8
alpha Carinids 310.5 +- 0.7 0.16 2.3 +- 0.6 95 (+0.4) 54 (0) 25 2.5
delta Velids (317) <1.3 127 (+0.5) 54 (-0.3) 35 3.0
alpha Centaurids 318.7 +- 0.5 0.18 7.3 +- 1.5 209 (+1.3) 58 (-0.3) 57 2.3
omicron Centaurids 322.7 +- 0.4 0.15 2.2 +- 0.3 174 (+0.9) 56 (-0.4) 51 2.8
theta Centaurids (333) <4.5 219 (+1.1) 38 (-0.4) 60 2.6
delta Leonids 334 +- 3 0.049 1.1 +- 0.3 168 (+1.0) +17 (-0.3) 23 3.0
Virginids (339) <1.5 163 (+0.9) +3 (-0.2) 26 3.0
gamma Normids 352.3 +- 0.5 0.19 5.8 +- 1.0 249 (+1.3) 51 (-0.2) 56 2.4
delta Pavonids 10.4 +- 1.5 0.075 5.3 +- 0.7 310 (+1.6) 63 (-0.2) 60 2.6
Lyrids rev. rev. rev. 272 (+1.2) +33 (+0.2) 49 2.7
mu Virginids 39 +- 2 0.045 2.2 +- 0.5 229 (+0.5) 7 (-0.3) 30 3.0
eta Aquarids 45.8 +- 0.5 0.080 36.7 +- 5.0 338 (+0.9) 1 (+0.3) 66 2.7
beta Corona Austrinids(55) <3.0 284 (+1.3) 40 (+0.1) 45 3.1
alpha Scorpiids 55.2 +- 0.9 0.13 3.2 +- 0.4 240 (+1.1) 25 (-0.2) 35 2.5
omega Scorpiids 71.9 +- 0.4 0.15 5.2 +- 1.4 239 (+1.0) 20 (-0.1) 21 3.0
Arietids 76 +- 1 0.10 54 +- 12 45 (+0.7) +23 (+0.6) 38 2.7
gamma Sagitarids 88.5 +- 1.1 0.037 2.4 +- 0.5 271 (+1.1) 26 (+0.1) 29 2.9
tau Cetids 95.0 +- 0.7 0.18 3.6 +- 1.1 24 (+0.9) 12 (+0.4) 66 2.5
theta Ophiuchids (97) (0.037) (2.3) 249 (+1.1) 11 (+0.1) 27 2.8
tau Aquarids 97.3 +- 0.5 0.24 7.1 +- 1.6 342 (+1.0) 12 (+0.4) 63 2.5
upsilon Phoenicids 110.5 +- 0.5 0.25 5.0 +- 1.9 23 (+1.0) 43 (+0.5) 48 3.0
psi Cygnids 116.0 +- 0.5 0.13 2.5 +- 0.8 305 (+0.6) +47 (+0.2) 37 2.7
Capricornids 121.7 +- 0.9 0.041 2.2 +- 0.3 303 (+0.9) 9 (+0.3) 25 2.0
delta Aquarids North 123.4 +- 1.0 0.063 1.0 +- 0.2 323 (+1.0) 5 (+0.2) 42 3.3
Piscis Austrinids 123.7 +- 0.7 (0.26) (2.9 +- 0.8) 337 (+1.0) 33 (+0.4) 42 3.2
delta Aquarids South 124.9 +- 0.3 0.091 11.4 +- 1.2 339 (+0.8) 17 (+0.2) 43 3.3
iota Aquarids South 131.0 +- 1.0 0.070 1.5 +- 0.3 336 (+1.0) 14 (+0.3) 36 3.3
Perseids 139.49 +- 0.04 0.20 84 +- 5 46 (+1.3) +58 (+0.1) 61 2.5
Cygnids 146.0 +- 0.8 0.069 2.3 +- 0.4 289 (+0.6) +52 (+0.3) 27 2.2
pi Eridanids (152) <40 52 (+0.8) 15 (+0.3) 59 2.8
gamma Doradids 155.0 +- 0.5 0.18 4.8 +- 1.6 61 (+0.5) 50 (+0.2) 41 2.8
Aurigids rev. rev. rev. 85 (+1.0) +42 (+0.2) 60 rev.
kappa Aquarids 176.5 +- 0.8 0.11 2.7 +- 0.5 338 (+0.9) 5 (+0.4) 19 2.8
epsilon Geminids 206.0 +- 1.0 0.082 2.9 +- 0.6 103 (+0.7) +28 (+0.1) 71 3.0
Orionids 207.9 +- 0.4 0.12 25 +- 4 95 (+0.7) +16 (+0.1) 67 3.1
Leo Minorids 209.0 +- 1.0 0.14 1.9 +- 0.7 162 (+1.0) +37 (-0.4) 61 2.7
Taurids 222.9 +- 1.0 0.026 7.3 +- 1.0 ** (+0.3) ** (+0.1) 30 2.3
delta Eridanids (228) <0.9 55 (+0.9) 2 (+0.2) 31 2.8
zeta Puppids 231.5 +- 0.5 0.13 3.2 +- 0.4 117 (+0.7) 42 (-0.2) 41 3.4
Leonids rev. rev. rev. 153 (+1.0) +22 (-0.4) 71 3.4
Puppids/Velids 251 +- 1 0.034 4.5 +- 0.7 128 (+0.8) 46 (-0.4) 40 2.9
Phoenicids 251.7 +- 0.5 0.30 2.8 +- 0.8 18 (+0.8) 58 (+0.4) 18 2.8
Monocerotids 260.2 +- 0.6 0.25 2.0 +- 0.4 100 (+1.0) +14 (-0.1) 43 3.5
Geminids 261.4 +- 0.1 0.39+/0.72(-)88 +- 4 112 (+1.0) +32 (+0.1) 36 2.6*
sigma Hydrusids 264.8 +- 0.8 0.10 2.5 +- 0.5 132 (+0.9) +2 (-0.3) 59 3.0
Ursids 270.3 +- 0.3 (0.61) 11.8 +- 2.5) 223 (-0.2) +78 (-0.3) 35 3.4
* chi varies with solar longitude
** multiple radiant (southern branch and northern branch), positions at solar longitude 223: RA 56, delta +22 (northern branch); RA 52, delta +14 (southern branch)
compiled after: Jenniskens P., 1994: Meteor stream activity I. The annual streams. Astronomy and Astrophysics 287, 990-1013
The ascending and descending slopes of most meteor streams behave according to equation ZHR = ZHRmax*10^(-B | l.sol-l.sol.max |) [Jenniskens 1994]. Six meteor streams listed (among them the well known Perseids, Leonids and Geminids) are best represented by two superimposed curves rather than by one curve: they show a steep sloped and (with the exception of the Geminids) symmetric main peak superimposed on an asymmetric shallow sloped background structure. B-values for these different structures in the activity curves for these streams are given in this second table:
Activity profile data for streams with main peak and background structure
