HELIO4CAST Multipoint ICME catalog v1.0 

This is the HELIO4CAST multipoint interplanetary coronal mass ejection (ICME) catalog. 
This is version 1.0, released 2021-September-10. doi: 10.6084/m9.figshare.15134745 

Rules: If results are produced with this catalog for peer-reviewed scientific publications,
please contact christian.moestl@oeaw.ac.at for possible co-authorship. 
The reference for this catalog is Moestl et al. 2021 (in preparation).  

The catalog is available as a python pandas dataframe (pickle), json, csv, xlsx, txt, at 
https://helioforecast.space/lineups and https://doi.org/10.6084/m9.figshare.15134745 . 

Number of events: 17 
ICME observatories: Solar Orbiter, Parker Solar Probe (PSP), BepiColombo, Wind, STEREO-A.   
Time range: April 2020 - April 2021. 

Authors: Christian Moestl, Andreas J. Weiss, Rachel L. Bailey, Martin A. Reiss, 
Space Research Institute, Austrian Academy of Sciences, Graz, Austria.
Barnes, J. A. Davies, R. A. Harrison, RAL Space, UK. 

The python source code for producing this catalog is available at https://github.com/cmoestl/heliocats lineups.ipynb

Each event has unique identifier either from the HELIO4CAST ICMECAT or the HELCATS HIGeoCAT. 

Comments: 

- Spacecraft positions are given in Heliocentric Earth Equatorial Coordinates (HEEQ) coordinates. 

- The coordinate system for the Bz magnetic field components is SCEQ, except for Wind (HEEQ, which is the equivalent for SCEQ for Earth). 
        Definition of SpaceCraft Equatorial Coordinates (SCEQ): 
        Z is the solar rotation axis. 
        Y is the cross product of Z and R, with R being the vector that points from the Sun to the spacecraft.
        X completes the right handed triad (and points away from the Sun). 
This system is thus like HEEQ but centered on the respective in situ spacecraft, so the SCEQ X and Y 
base vectors are rotated by the HEEQ longitude of the in situ spacecraft from HEEQ X and Y.
The Y vector is similar to the T vector in an RTN system for each spacecraft, but the X and Z vectors 
are rotated around Y compared to an RTN system. The differences between RTN and SCEQ for spacecraft within 
a few degrees of the solar equatorial plane are very small (within a few 0.1 nT usually).
We choose SCEQ for the advantage that a comparison of the data of multipoint CME events 
and comparisons to simulations are simpler because there is always a similar reference plane (the solar equatorial plane).

'

Parameters:
01: event: To which multipoint event the row belongs to, unit: integer.
02: event_start_time: For in situ spacecraft, similar to icme_start_time in the ICMECAT. For STEREO-A-HI (HIA), its the sse_launch_time from HIGeoCAT. unit: UTC.
03: spacecraft: HIA if the entry refers to observations from STEREO-A-HI, otherwise the in situ observing spacecraft. unit: string.
04: sc_heliodistance: Heliocentric distance of the spacecraft at event_start_time. unit: AU.
05: sc_long_heeq: Heliospheric longitude of the spacecraft at event_start_time, range [-180,180]. unit: degree (HEEQ).
06: cme_long_heeq: CME longitude, derived from SSEF30 modeling with STEREO-A-HI, range [-180,180]. unit: degree (HEEQ).
07: speed: For in situ observations, the speed over the whole ICME interval (icme_speed_mean in ICMECAT). For HIA, the speed derived from SSEF30 modeling in HIGeoCAT. unit: km/s.
08: mo_bmax: Only for in situ observations, maximum total magnetic field in the magnetic obstacle interval (mo_start_time to mo_end_time). unit: nT.
09: mo_bzmin: Only for in situ observations, minimum magnetic field Bz component in the magnetic obstacle. unit: nT.
10: id: the id from either the ICMECAT or HIGeoCAT, allowing to look up the event directly in these other catalogs.


event event_start_time spacecraft sc_heliodistance sc_heeq_lon cme_heeq_lon speed mo_bmax mo_bzmin id
0 1 2020-04-15T20:49Z HIA 0.967 -75.4 -6 339 - - HCME_A__20200415_01
1 1 2020-04-19T05:06Z SolarOrbiter 0.808 -4.0 - - 21.2 -19.2 ICME_SOLO_MOESTL_20200419_01
2 1 2020-04-20T01:34Z Wind 0.996 0.2 - 346 16.2 -15.1 ICME_Wind_MOESTL_20200420_01
3 1 2020-04-20T03:09Z BepiColombo 1.011 -1.3 - - 16.1 -14.4 ICME_BEPI_MOESTL_20200420_01
4 2 2020-05-26T01:29Z HIA 0.966 -72.3 36 497 - - HCME_A__20200526_01
5 2 2020-05-28T12:45Z SolarOrbiter 0.564 28.2 - - 28.2 -26.6 ICME_SOLO_MOESTL_20200528_01
6 2 2020-05-29T21:20Z Wind 1.005 -0.2 - 350 14.5 -12.4 ICME_Wind_MOESTL_20200529_01
7 2 2020-05-29T15:27Z BepiColombo 0.977 -5.2 - - 13.1 -11.5 ICME_BEPI_MOESTL_20200529_01
8 3 2020-05-27T04:49Z HIA 0.966 -72.2 -47 315 - - HCME_A__20200527_01
9 3 2020-06-03T07:54Z STEREO-A 0.965 -71.5 - 373 9.9 -4.6 ICME_STEREO_A_MOESTL_20200603_01
10 4 2020-06-23T00:49Z HIA 0.963 -69.6 16 290 - - HCME_A__20200623_01
11 4 2020-06-25T11:39Z PSP 0.523 19.9 - 302 27.4 -23.1 ICME_PSP_MOESTL_20200625_01
12 4 2020-06-29T09:44Z BepiColombo 0.881 -3.9 - - 11.4 -7.8 ICME_BEPI_MOESTL_20200629_01
13 4 2020-06-30T01:12Z Wind 1.007 -0.2 - 332 6.4 -3.3 ICME_Wind_MOESTL_20200630_01
14 5 2020-07-06T06:09Z HIA 0.962 -68.4 -61 407 - - HCME_A__20200706_01
15 5 2020-07-09T14:17Z STEREO-A 0.962 -68.0 - 374 15.3 -13.9 ICME_STEREO_A_MOESTL_20200709_01
16 6 2020-07-09T08:49Z HIA 0.962 -68.1 47 493 - - HCME_A__20200709_01
17 6 2020-07-13T20:18Z Wind 1.006 -0.2 - 377 9.4 -8.9 ICME_Wind_MOESTL_20200713_01
18 7 2020-08-16T14:09Z HIA 0.958 -64.8 -47 467 - - HCME_A__20200816_01
19 7 2020-08-19T21:11Z STEREO-A 0.958 -64.6 - - 19.6 -13.4 ICME_STEREO_A_MOESTL_20200819_01
20 8 2020-09-08T16:49Z HIA 0.957 -63.1 41 237 - - HCME_A__20200908_01
21 8 2020-09-12T10:23Z PSP 0.473 13.0 - 350 19.4 -9.6 ICME_PSP_MOESTL_20200912_01
22 9 2020-09-30T18:49Z HIA 0.956 -61.5 -14 322 - - HCME_A__20200930_01
23 9 2020-10-05T06:52Z Wind 0.991 0.2 - 353 10.7 -8.6 ICME_Wind_MOESTL_20201005_01
24 10 2020-10-06T15:29Z HIA 0.956 -61.1 65 619 - - HCME_A__20201006_01
25 10 2020-10-08T10:27Z BepiColombo 0.694 79.5 - - 15.2 -11 ICME_BEPI_MOESTL_20201008_01
26 10 2020-10-10T04:07Z BepiColombo 0.698 80.4 - - 12.3 -4.5 ICME_BEPI_MOESTL_20201010_01
27 11 2020-10-26T19:29Z HIA 0.957 -59.7 -33 384 - - HCME_A__20201026_01
28 11 2020-11-01T11:54Z Wind 0.984 0.1 - 352 9.4 -7.4 ICME_Wind_MOESTL_20201101_01
29 12 2020-12-01T02:22Z PSP 0.804 -96.8 - - 39 14.6 ICME_PSP_MOESTL_20201201_01
30 12 2020-12-01T07:28Z STEREO-A 0.959 -57.6 - - 15.9 -12.1 ICME_STEREO_A_MOESTL_20201201_01
31 13 2020-11-29T16:09Z HIA 0.959 -57.7 -23 537 - - HCME_A__20201129_01
32 13 2020-12-01T10:49Z HIA 0.959 -57.6 -37 652 - - HCME_A__20201201_01
33 13 2020-12-03T18:04Z STEREO-A 0.960 -57.5 - - 10.1 -9.3 ICME_STEREO_A_MOESTL_20201203_01
34 14 2021-02-11T01:29Z HIA 0.966 -55.8 -24 380 - - HCME_A__20210211_01
35 14 2021-02-15T18:58Z Wind 0.977 0.1 - 354 11.2 -10 ICME_Wind_MOESTL_20210215_01
36 15 2021-02-20T16:48Z HIA 0.967 -55.7 -26 423 - - HCME_A__20210220_01
37 15 2021-02-23T10:34Z STEREO-A 0.967 -55.7 - - 11.4 -10.8 ICME_STEREO_A_MOESTL_20210223_01
38 15 2021-02-24T04:08Z Wind 0.979 0.2 - 481 9.4 -6.8 ICME_Wind_MOESTL_20210224_01
39 16 2021-03-22T08:48Z HIA 0.967 -55.0 -8 353 - - HCME_A__20210322_01
40 16 2021-03-26T18:00Z Wind 0.989 0.2 - 373 6.9 -4.7 ICME_Wind_MOESTL_20210326_01
41 17 2021-03-31T00:08Z HIA 0.967 -54.7 -28 397 - - HCME_A__20210331_01
42 17 2021-04-04T21:52Z Wind 0.992 0.2 - 320 9 -8.4 ICME_Wind_MOESTL_20210404_01
43 17 2021-04-06T01:27Z STEREO-A 0.967 -54.4 - - 12.5 -10.2 ICME_STEREO_A_MOESTL_20210406_01