RECON: TNO occultation with 07HV90

Event between 07HV90 and star GA0660:09889898 with event index number of 2019493

Geocentric closest approach at 2022/07/12 05:34:16 UTC

J2000 position of star is 17:09:19.5 -22:24:28
Equinox of date position of star is 17:10:39.8 -22:26:04
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 10 degrees from the moon. Moon is 96% illuminated.
TNO apparent brightness V=22.7

[RECON map]
TNO is 41.8 AU from the Sun and 40.9 AU from the Earth.
The TNO is moving 20.3 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 857 seconds.
The 1-sigma cross-track error in the shadow position is 4641 km.
The sky-plane scale is 29662.8 km/arcsec.

The TNO has an absolute magnitude Hv=6.5
Diameter=296.5 km assuming a 5% albedo -- 14.6 sec chord
Diameter=121.0 km assuming a 30% albedo -- 6.0 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 07HV90, (2022/07/12 05:34UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:47.5 -26:28:48  0.9  9.93  18
35Eta Oph      17:11:40.3 -15:45:04  2.6  6.69  14
PPM 266403     17:07:32.6 -21:35:38  6.3  1.11  11
PPM 266547     17:13:45.2 -22:57:03  8.2  0.88   9
PPM 266486     17:11:05.6 -22:25:39  9.5  0.10  10
07HV90         17:10:40.9 -22:26:06 16.7        10
Positions are for equinox of date

This table contains the target star visibility for the RECON network. The observing range has been set to a maximum of 1.0 sigma about the mid-time.
The median site spacing is 15.3 km RECON observability=0.6 and success probability=3.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 05:34:02 -13.1 AT Up 15.0 189.9 Really Low 05:19:02 - 05:49:02 1064
Kamloops 05:34:50 -10.0 NT Up 16.8 176.2 Really Low 05:19:50 - 05:49:50 974
Kelowna 05:34:47 -11.0 NT Up 17.7 177.1 Really Low 05:19:47 - 05:49:47 952
Peachland 05:34:48 -11.0 NT Up 17.8 176.8 Really Low 05:19:48 - 05:49:48 947
Summerland 05:34:48 -11.1 NT Up 17.9 176.9 Really Low 05:19:48 - 05:49:48 942
Penticton 05:34:47 -11.2 NT Up 18.0 177.0 Really Low 05:19:47 - 05:49:47 940
Oliver 05:34:47 -11.5 NT Up 18.4 177.0 Really Low 05:19:47 - 05:49:47 928
Anarchist Mountain Observatory 05:34:47 -11.7 NT Up 18.5 177.2 Really Low 05:19:47 - 05:49:47 924
Tonasket 05:34:47 -11.9 NT Up 18.8 177.1 Really Low 05:19:47 - 05:49:47 911
Okanogan 05:34:48 -12.2 AT Up 19.2 177.0 Really Low 05:19:48 - 05:49:48 898
Brewster 05:34:48 -12.3 AT Up 19.4 176.8 Really Low 05:19:48 - 05:49:48 887
Manson/Chelan 05:34:50 -12.3 AT Up 19.6 176.4 Really Low 05:19:50 - 05:49:50 876
Victoria 05:35:01 -10.5 NT Up 18.8 173.3 Really Low 05:20:01 - 05:50:01 875
Wenatchee 05:34:50 -12.7 AT Up 20.1 176.2 Low 05:19:50 - 05:49:50 857
Ellensburg 05:34:51 -12.9 AT Up 20.5 176.0 Low 05:19:51 - 05:49:51 840
Yakima 05:34:52 -13.2 AT Up 20.9 176.0 Low 05:19:52 - 05:49:52 823
Toppenish/White Swan 05:34:51 -13.5 AT Up 21.1 176.1 Low 05:19:51 - 05:49:51 815
PNWRO 05:34:45 -14.4 AT Up 21.6 177.6 Low 05:19:45 - 05:49:45 811
Goldendale 05:34:53 -13.7 AT Up 21.7 175.7 Low 05:19:53 - 05:49:53 790
The Dalles 05:34:54 -13.8 AT Up 21.9 175.3 Low 05:19:54 - 05:49:54 777
Maupin 05:34:54 -14.1 AT Up 22.3 175.4 Low 05:19:54 - 05:49:54 761
Sisters 05:34:55 -14.6 AT Up 23.1 174.9 Low 05:19:55 - 05:49:55 719
Bend 05:34:55 -14.9 AT Up 23.4 175.2 Low 05:19:55 - 05:49:55 710
Oregon Observatory 05:34:55 -15.0 AT Up 23.6 175.0 Low 05:19:55 - 05:49:55 702
North Lake 05:34:53 -15.8 AT Up 24.2 175.5 Low 05:19:53 - 05:49:53 677
Chiloquin 05:34:57 -15.9 AT Up 24.8 174.5 Low 05:19:57 - 05:49:57 637
Lakeview 05:34:51 -16.9 AT Up 25.3 176.0 Low 05:19:51 - 05:49:51 631
Klamath Falls 05:34:57 -16.2 AT Up 25.2 174.6 Low 05:19:57 - 05:49:57 622
Cedarville 05:34:51 -17.5 AT Up 26.0 176.2 Low 05:19:51 - 05:49:51 601
Dunrhomin 05:33:49 -24.2 Dark Up 26.5 191.4 Low 05:18:49 - 05:48:49 592
CU-SBO 05:33:49 -24.4 Dark Up 26.8 191.4 Low 05:18:49 - 05:48:49 580
Fall River/Burney 05:34:56 -17.3 AT Up 26.4 174.9 Low 05:19:56 - 05:49:56 567
Susanville 05:34:53 -18.1 Dark Up 27.1 175.7 Low 05:19:53 - 05:49:53 541
Gimple 05:34:54 -18.3 Dark Up 27.3 175.5 Low 05:19:54 - 05:49:54 525
Greenville 05:34:54 -18.2 Dark Up 27.3 175.4 Low 05:19:54 - 05:49:54 525
Quincy 05:34:54 -18.4 Dark Up 27.5 175.4 Low 05:19:54 - 05:49:54 514
Portola 05:34:52 -18.7 Dark Up 27.7 175.8 Low 05:19:52 - 05:49:52 512
Reno 05:34:49 -19.2 Dark Up 28.0 176.5 Low 05:19:49 - 05:49:49 503
Carson City 05:34:49 -19.5 Dark Up 28.3 176.5 Low 05:19:49 - 05:49:49 484
Yerington 05:34:47 -20.0 Dark Up 28.5 177.2 Low 05:19:47 - 05:49:47 479
Gardnerville 05:34:49 -19.7 Dark Up 28.6 176.6 Low 05:19:49 - 05:49:49 472
Hawthorne 05:34:44 -20.6 Dark Up 29.0 177.7 Low 05:19:44 - 05:49:44 458
Tonopah 05:34:38 -21.6 Dark Up 29.5 179.2 Low 05:19:38 - 05:49:38 442
Lee Vining 05:34:46 -20.8 Dark Up 29.6 177.2 Low 05:19:46 - 05:49:46 424
Bishop 05:34:43 -21.6 Dark Up 30.2 177.9 Up 05:19:43 - 05:49:43 395
Beatty 05:34:36 -22.7 Dark Up 30.7 179.6 Up 05:19:36 - 05:49:36 380
Indian Springs 05:34:32 -23.5 Dark Up 31.0 180.8 Up 05:19:32 - 05:49:32 368
Henderson 05:34:28 -24.2 Dark Up 31.5 181.5 Up 05:19:28 - 05:49:28 340
Patrick 05:34:23 -25.2 Dark Up 32.1 182.7 Up 05:19:23 - 05:49:23 310
Kingman/Dolan Springs 05:34:24 -25.4 Dark Up 32.4 182.5 Up 05:19:24 - 05:49:24 296
Laughlin/Bullhead City 05:34:26 -25.1 Dark Up 32.4 182.0 Up 05:19:26 - 05:49:26 291
Mohave Valley 05:34:26 -25.4 Dark Up 32.7 182.0 Up 05:19:26 - 05:49:26 275
Lake Havasu City 05:34:25 -25.8 Dark Up 33.1 182.3 Up 05:19:25 - 05:49:25 252
Parker 05:34:25 -26.1 Dark Up 33.4 182.3 Up 05:19:25 - 05:49:25 231
George/Scottsdale 05:34:14 -27.5 Dark Up 33.7 185.0 Up 05:19:14 - 05:49:14 216
Wildwood 05:34:44 -24.1 Dark Up 33.5 177.6 Up 05:19:44 - 05:49:44 202
Idyllwild 05:34:36 -25.3 Dark Up 33.9 179.7 Up 05:19:36 - 05:49:36 193
Calipatria 05:34:30 -26.4 Dark Up 34.5 181.0 Up 05:19:30 - 05:49:30 161
Yuma 05:34:26 -27.2 Dark Up 34.9 182.0 Up 05:19:26 - 05:49:26 139

Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.

Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.

Star training set for 07HV90, (2022/07/12 05:34UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  9.93  18
35Eta Oph      17:10:22.7 -15:43:29  2.6  6.69  14
PPM 266403     17:06:11.8 -21:33:54  6.3  1.11  11
PPM 266547     17:12:23.4 -22:55:31  8.2  0.88   9
PPM 266486     17:09:44.2 -22:24:02  9.5  0.10  10
07HV90         17:09:19.5 -22:24:28 16.7        10
Positions are for J2000

Event circumstances last updated at 2022/03/14 01:05:35 UT

Marc W. Buie, Southwest Research Institute

RECON