RECON: TNO occultation with 07HV90

Event between 07HV90 and star GA0660:08981283 with event index number of 1069163

Geocentric closest approach at 2021/08/14 03:37:37 UTC

J2000 position of star is 17:01:42.1 -22:11:00
Equinox of date position of star is 17:02:58.8 -22:12:46
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 45 degrees from the moon. Moon is 33% illuminated.
TNO apparent brightness V=22.8

[RECON map]
TNO is 41.7 AU from the Sun and 41.3 AU from the Earth.
The TNO is moving 7.5 km/sec on the sky relative to the star, or, 0.9 arcsec/hr.
The 1-sigma error in the time of the event is 1951 seconds.
The 1-sigma cross-track error in the shadow position is 4339 km.
The sky-plane scale is 29955.7 km/arcsec.

The TNO has an absolute magnitude Hv=6.5
Diameter=300.6 km assuming a 5% albedo -- 39.9 sec chord
Diameter=122.7 km assuming a 30% albedo -- 16.3 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 07HV90, (2021/08/14 03:38UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:44.2 -26:28:41  0.9  8.49  38
35Eta Oph      17:11:37.2 -15:45:01  2.6  6.78  46
PPM 266403     17:07:29.4 -21:35:34  6.3  1.21  45
PPM 266258     17:01:47.2 -21:29:34  7.6  0.77  44
PPM 266280     17:02:37.4 -22:23:09  9.6  0.19  44
07HV90         17:03:00.0 -22:12:48 16.9        45
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 0.5 sigma about the mid-time.
The median site spacing is 0.0 km RECON observability=0.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 03:37:42 -3.5 CT Up 17.5 182.4 Really Low 03:22:42 - 03:52:42 3400
Kelowna 03:37:44 -3.6 CT Up 17.9 182.3 Really Low 03:22:44 - 03:52:44 3387
Peachland 03:37:46 -3.5 CT Up 18.0 182.0 Really Low 03:22:46 - 03:52:46 3383
Summerland 03:37:45 -3.6 CT Up 18.2 182.1 Really Low 03:22:45 - 03:52:45 3378
Penticton 03:37:43 -3.7 CT Up 18.3 182.2 Really Low 03:22:43 - 03:52:43 3375
Oliver 03:37:44 -3.9 CT Up 18.6 182.2 Really Low 03:22:44 - 03:52:44 3363
Anarchist Mountain Observatory 03:37:41 -4.1 CT Up 18.8 182.4 Really Low 03:22:41 - 03:52:41 3358
Tonasket 03:37:42 -4.2 CT Up 19.1 182.3 Really Low 03:22:42 - 03:52:42 3346
Okanogan 03:37:43 -4.2 CT Up 19.4 182.2 Really Low 03:22:43 - 03:52:43 3334
Victoria 03:38:19 -2.0 CT Up 19.3 178.6 Really Low 03:23:19 - 03:53:19 3331
Brewster 03:37:46 -4.2 CT Up 19.7 182.0 Really Low 03:22:46 - 03:52:46 3323
Manson/Chelan 03:37:49 -4.1 CT Up 19.9 181.6 Really Low 03:22:49 - 03:52:49 3315
Wenatchee 03:37:50 -4.2 CT Up 20.4 181.5 Low 03:22:50 - 03:52:50 3296
Ellensburg 03:37:52 -4.3 CT Up 20.8 181.3 Low 03:22:52 - 03:52:52 3280
Yakima 03:37:51 -4.5 CT Up 21.2 181.3 Low 03:22:51 - 03:52:51 3264
Toppenish/White Swan 03:37:50 -4.7 CT Up 21.4 181.4 Low 03:22:50 - 03:52:50 3255
Pasco 03:37:38 -5.5 CT Up 21.5 182.6 Low 03:22:38 - 03:52:38 3252
PNWRO 03:37:35 -5.7 CT Up 21.8 182.9 Low 03:22:35 - 03:52:35 3242
Goldendale 03:37:54 -4.6 CT Up 22.0 181.0 Low 03:22:54 - 03:52:54 3232
The Dalles 03:37:57 -4.5 CT Up 22.2 180.7 Low 03:22:57 - 03:52:57 3221
Maupin 03:37:57 -4.8 CT Up 22.6 180.8 Low 03:22:57 - 03:52:57 3204
Sisters 03:38:02 -4.8 CT Up 23.5 180.3 Low 03:23:02 - 03:53:02 3165
Redmond 03:37:57 -5.1 CT Up 23.5 180.7 Low 03:22:57 - 03:52:57 3165
Bend 03:37:59 -5.1 CT Up 23.8 180.6 Low 03:22:59 - 03:52:59 3155
Oregon Observatory 03:37:59 -5.1 CT Up 23.9 180.4 Low 03:22:59 - 03:52:59 3148
La Pine/Gilchrist 03:38:00 -5.2 CT Up 24.1 180.4 Low 03:23:00 - 03:53:00 3138
North Lake 03:37:55 -5.7 CT Up 24.6 181.0 Low 03:22:55 - 03:52:55 3120
Paisley 03:37:50 -6.2 NT Up 25.1 181.3 Low 03:22:50 - 03:52:50 3095
Chiloquin 03:38:04 -5.4 CT Up 25.2 180.0 Low 03:23:04 - 03:53:04 3086
Lakeview 03:37:48 -6.5 NT Up 25.6 181.5 Low 03:22:48 - 03:52:48 3071
Klamath Falls 03:38:02 -5.6 CT Up 25.6 180.1 Low 03:23:02 - 03:53:02 3070
Cedarville 03:37:46 -6.9 NT Up 26.3 181.7 Low 03:22:46 - 03:52:46 3039
Fall River/Burney 03:37:58 -6.3 NT Up 26.8 180.5 Low 03:22:58 - 03:52:58 3013
Susanville 03:37:51 -7.1 NT Up 27.4 181.2 Low 03:22:51 - 03:52:51 2983
Gimple 03:37:53 -7.1 NT Up 27.7 181.0 Low 03:22:53 - 03:52:53 2968
Greenville 03:37:55 -7.0 NT Up 27.7 180.9 Low 03:22:55 - 03:52:55 2968
Quincy 03:37:54 -7.1 NT Up 27.9 180.9 Low 03:22:54 - 03:52:54 2957
Portola 03:37:49 -7.5 NT Up 28.0 181.4 Low 03:22:49 - 03:52:49 2952
Dunrhomin 03:35:07 -16.9 AT Up 25.8 196.4 Low 03:20:07 - 03:50:07 2945
Reno 03:37:41 -8.0 NT Up 28.2 182.1 Low 03:22:41 - 03:52:41 2939
Carson City 03:37:41 -8.2 NT Up 28.6 182.1 Low 03:22:41 - 03:52:41 2920
Yerington 03:37:35 -8.7 NT Up 28.8 182.7 Low 03:22:35 - 03:52:35 2911
Gardnerville 03:37:41 -8.3 NT Up 28.8 182.1 Low 03:22:41 - 03:52:41 2907
Hawthorne 03:37:28 -9.3 NT Up 29.2 183.3 Low 03:22:28 - 03:52:28 2887
Tonopah 03:37:12 -10.4 NT Up 29.6 184.7 Low 03:22:12 - 03:52:12 2862
Lee Vining 03:37:33 -9.2 NT Up 29.8 182.8 Low 03:22:33 - 03:52:33 2856
Bishop 03:37:24 -10.0 NT Up 30.4 183.6 Up 03:22:24 - 03:52:24 2823
Beatty 03:37:06 -11.3 NT Up 30.7 185.3 Up 03:22:06 - 03:52:06 2797
Indian Springs 03:36:55 -12.2 AT Up 31.0 186.4 Up 03:21:55 - 03:51:55 2778
Henderson 03:36:46 -12.9 AT Up 31.4 187.1 Up 03:21:46 - 03:51:46 2746
Patrick 03:36:32 -13.9 AT Up 32.0 188.3 Up 03:21:32 - 03:51:32 2708
CPSLO 03:37:49 -9.3 NT Up 32.5 181.3 Up 03:22:49 - 03:52:49 2699
Kingman/Dolan Springs 03:36:34 -13.9 AT Up 32.2 188.2 Up 03:21:34 - 03:51:34 2695
Laughlin/Bullhead City 03:36:41 -13.6 AT Up 32.3 187.6 Up 03:21:41 - 03:51:41 2694
Mohave Valley 03:36:40 -13.7 AT Up 32.5 187.6 Up 03:21:40 - 03:51:40 2678
Lake Havasu City 03:36:37 -14.1 AT Up 32.9 187.9 Up 03:21:37 - 03:51:37 2653
Parker 03:36:34 -14.3 AT Up 33.3 188.0 Up 03:21:34 - 03:51:34 2632
Wildwood 03:37:25 -11.3 NT Up 33.6 183.5 Up 03:22:25 - 03:52:25 2630
Idyllwild 03:37:03 -12.8 AT Up 33.9 185.5 Up 03:22:03 - 03:52:03 2609
George/Scottsdale 03:36:07 -16.1 AT Up 33.4 190.6 Up 03:21:07 - 03:51:07 2601
Blythe 03:36:38 -14.3 AT Up 33.8 187.7 Up 03:21:38 - 03:51:38 2600
Calipatria 03:36:48 -13.9 AT Up 34.4 186.8 Up 03:21:48 - 03:51:48 2570
Yuma 03:36:38 -14.7 AT Up 34.7 187.8 Up 03:21:38 - 03:51:38 2541

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, (2021/08/14 03:38UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  8.49  38
35Eta Oph      17:10:22.7 -15:43:29  2.6  6.78  46
PPM 266403     17:06:11.8 -21:33:54  6.3  1.21  45
PPM 266258     17:00:29.7 -21:27:44  7.6  0.77  44
PPM 266280     17:01:19.4 -22:21:20  9.6  0.19  44
07HV90         17:01:42.1 -22:11:00 16.9        44
Positions are for J2000

Event circumstances last updated at 2021/04/19 23:04:22 UT

Marc W. Buie, Southwest Research Institute

RECON