RECON: TNO occultation with 07LH38

Event between 07LH38 and star GA0840:08469095 with event index number of 2026150

Geocentric closest approach at 2023/05/29 10:46:03 UTC

J2000 position of star is 18:24:28.2 -05:33:51
Equinox of date position of star is 18:25:42.8 -05:32:59
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 97 degrees from the moon. Moon is 67% illuminated.
Apparent brightness V=23.5

[RECON map]
Object is 37.6 AU from the Sun and 36.7 AU from the Earth.
Apparent velocity is 20.2 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 429 seconds.
The 1-sigma cross-track error in the shadow position is 4889 km.
The sky-plane scale is 26624.8 km/arcsec.

The object has an absolute magnitude Hv=7.7
Diameter=171.4 km assuming a 5% albedo -- 8.5 sec chord
Diameter=70.0 km assuming a 30% albedo -- 3.5 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 07LH38, (2023/05/29 10:46UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:50.8 -26:28:55  0.9 34.47  72
60Bet Oph      17:44:37.8 +04:33:33  2.8 14.40  86
PPM 201808     18:31:29.4 -05:42:25  6.2  1.44  99
PPM 201703     18:24:39.0 -05:34:11  8.5  0.27  97
07LH38         18:25:43.2 -05:32:59 16.8        97
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 2.1 sigma about the mid-time.
The median site spacing is 31.9 km RECON observability=0.5 and success probability=4.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 10:44:43 -1.7 CT Down 28.3 209.5 Low 10:29:43 - 10:59:43 1666
Kamloops 10:45:28 -8.9 NT Down 32.9 193.8 Up 10:30:28 - 11:00:28 1598
Kelowna 10:45:24 -9.2 NT Down 33.5 194.9 Up 10:30:24 - 11:00:24 1546
Peachland 10:45:25 -9.4 NT Down 33.7 194.6 Up 10:30:25 - 11:00:25 1540
Summerland 10:45:24 -9.5 NT Down 33.8 194.8 Up 10:30:24 - 11:00:24 1530
Penticton 10:45:24 -9.5 NT Down 33.9 194.9 Up 10:30:24 - 11:00:24 1526
Oliver 10:45:24 -9.8 NT Down 34.2 195.0 Up 10:30:24 - 11:00:24 1503
Anarchist Mountain Observatory 10:45:23 -9.8 NT Down 34.3 195.2 Up 10:30:23 - 11:00:23 1493
Victoria 10:45:37 -11.8 NT Down 35.4 190.5 Up 10:30:37 - 11:00:37 1461
Okanogan 10:45:23 -10.4 NT Down 35.0 195.1 Up 10:30:23 - 11:00:23 1450
Brewster 10:45:23 -10.7 NT Down 35.3 194.9 Up 10:30:23 - 11:00:23 1433
Manson/Chelan 10:45:25 -11.0 NT Down 35.6 194.5 Up 10:30:25 - 11:00:25 1419
Wenatchee 10:45:25 -11.5 NT Down 36.0 194.4 Up 10:30:25 - 11:00:25 1388
Ellensburg 10:45:25 -11.9 NT Down 36.5 194.2 Up 10:30:25 - 11:00:25 1360
Yakima 10:45:25 -12.2 AT Down 36.9 194.2 Up 10:30:25 - 11:00:25 1332
Toppenish/White Swan 10:45:24 -12.3 AT Down 37.1 194.5 Up 10:30:24 - 11:00:24 1317
PNWRO 10:45:18 -11.9 NT Down 37.1 196.3 Up 10:30:18 - 11:00:18 1291
The Dalles 10:45:27 -13.2 AT Down 37.9 193.6 Up 10:30:27 - 11:00:27 1264
Maupin 10:45:26 -13.5 AT Down 38.3 193.8 Up 10:30:26 - 11:00:26 1235
Sisters 10:45:27 -14.4 AT Down 39.3 193.4 Up 10:30:27 - 11:00:27 1173
Bend 10:45:26 -14.5 AT Down 39.5 193.8 Up 10:30:26 - 11:00:26 1156
Oregon Observatory 10:45:26 -14.7 AT Down 39.7 193.6 Up 10:30:26 - 11:00:26 1143
Chiloquin 10:45:27 -15.9 AT Down 41.0 193.4 Up 10:30:27 - 11:00:27 1047
Klamath Falls 10:45:26 -16.1 AT Down 41.3 193.5 Up 10:30:26 - 11:00:26 1022
Cedarville 10:45:19 -15.9 AT Down 41.7 195.7 Up 10:30:19 - 11:00:19 969
Fall River/Burney 10:45:24 -16.9 AT Down 42.4 194.3 Up 10:30:24 - 11:00:24 933
Greenville 10:45:22 -17.4 AT Down 43.2 195.1 Up 10:30:22 - 11:00:22 863
Gimple 10:45:21 -17.3 AT Down 43.2 195.2 Up 10:30:21 - 11:00:21 863
Dunrhomin 10:44:20 -8.8 NT Down 38.1 214.4 Up 10:29:20 - 10:59:20 848
Quincy 10:45:22 -17.5 AT Down 43.4 195.1 Up 10:30:22 - 11:00:22 847
Portola 10:45:19 -17.4 AT Down 43.4 195.8 Up 10:30:19 - 11:00:19 837
Nikitin 10:44:19 -8.9 NT Down 38.3 214.4 Up 10:29:19 - 10:59:19 834
CU-SBO 10:44:20 -9.0 NT Down 38.4 214.4 Up 10:29:20 - 10:59:20 829
Reno 10:45:17 -17.3 AT Down 43.5 196.7 Up 10:30:17 - 11:00:17 816
Carson City 10:45:16 -17.5 AT Down 43.9 196.8 Up 10:30:16 - 11:00:16 788
Yerington 10:45:13 -17.4 AT Down 43.9 197.7 Up 10:30:13 - 11:00:13 772
Gardnerville 10:45:16 -17.7 AT Down 44.1 197.0 Up 10:30:16 - 11:00:16 769
Hawthorne 10:45:11 -17.4 AT Down 44.2 198.6 Up 10:30:11 - 11:00:11 735
Lee Vining 10:45:12 -18.1 Dark Down 44.9 198.1 Up 10:30:12 - 11:00:12 690
Bishop 10:45:09 -18.2 Dark Down 45.3 199.3 Up 10:30:09 - 11:00:09 641
Beatty 10:45:02 -17.6 AT Down 45.3 201.6 Up 10:30:02 - 11:00:02 602
Patrick 10:44:48 -17.1 AT Down 45.7 206.0 Up 10:29:48 - 10:59:48 475
Laughlin/Bullhead City 10:44:51 -17.7 AT Down 46.2 205.2 Up 10:29:51 - 10:59:51 455
Lake Havasu City 10:44:49 -18.0 AT Down 46.7 205.8 Up 10:29:49 - 10:59:49 397
Wildwood 10:45:07 -20.7 Dark Down 48.4 200.1 Up 10:30:07 - 11:00:07 368
Idyllwild 10:44:59 -19.9 Dark Down 48.2 202.9 Up 10:29:59 - 10:59:59 336
George/Scottsdale 10:44:38 -17.0 AT Down 46.4 209.4 Up 10:29:38 - 10:59:38 327
Calipatria 10:44:53 -19.6 Dark Down 48.3 204.8 Up 10:29:53 - 10:59:53 281
Yuma 10:44:49 -19.4 Dark Down 48.4 206.3 Up 10:29:49 - 10:59:49 243

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 07LH38, (2023/05/29 10:46UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 34.47  72
60Bet Oph      17:43:28.3 +04:34:06  2.8 14.40  86
PPM 201808     18:30:14.3 -05:43:28  6.2  1.44  99
PPM 201703     18:23:24.0 -05:35:00  8.5  0.27  97
07LH38         18:24:28.2 -05:33:51 16.8        97
Positions are for J2000

Event circumstances last updated at 2023/04/18 02:26:19 UT

Marc W. Buie, Southwest Research Institute

RECON