RECON: TNO occultation with 04HH79

Event between 04HH79 and star GA0720:07278464 with event index number of 2632500

Geocentric closest approach at 2024/04/16 09:16:02 UTC

J2000 position of star is 17:05:56.4 -17:57:36
Equinox of date position of star is 17:07:19.8 -17:59:27
Stellar brightness G=15.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 133 degrees from the moon. Moon is 56% illuminated.
Apparent brightness V=23.2

[RECON map]
Object is 42.1 AU from the Sun and 41.4 AU from the Earth.
Apparent velocity is 14.1 km/sec on the sky relative to the star, or, 1.7 arcsec/hr.
The 1-sigma error in the time of the event is 542 seconds.
The 1-sigma cross-track error in the shadow position is 4481 km.
The sky-plane scale is 30036.4 km/arcsec.

The object has an absolute magnitude Hv=6.9
Diameter=251.2 km assuming a 5% albedo -- 17.8 sec chord
Diameter=102.6 km assuming a 30% albedo -- 7.3 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 04HH79, (2024/04/16 09:16UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.1 -26:29:02  0.9 11.96 126
35Eta Oph      17:11:46.4 -15:45:12  2.6  2.47 133
PPM 232651     17:09:39.6 -17:38:21  6.0  0.65 133
PPM 232594     17:07:13.4 -18:08:51  8.1  0.16 133
PPM 232606     17:07:41.1 -17:58:34  9.1  0.08 133
04HH79         17:07:21.4 -17:59:29 15.3       133
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 1.7 sigma about the mid-time.
The median site spacing is 11.7 km RECON observability=0.7 and success probability=5.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 09:19:19 -21.1 Dark Up 18.3 162.4 Really Low 09:04:19 - 09:34:19 -768
Kamloops 09:20:20 -26.6 Dark Up 15.9 148.6 Really Low 09:05:20 - 09:35:20 -1203
Kelowna 09:20:18 -27.1 Dark Up 16.9 149.3 Really Low 09:05:18 - 09:35:18 -1223
Peachland 09:20:19 -27.3 Dark Up 16.9 149.0 Really Low 09:05:19 - 09:35:19 -1238
Summerland 09:20:19 -27.4 Dark Up 17.1 149.1 Really Low 09:05:19 - 09:35:19 -1243
Penticton 09:20:19 -27.4 Dark Up 17.2 149.2 Really Low 09:05:19 - 09:35:19 -1244
Oliver 09:20:19 -27.8 Dark Up 17.5 149.1 Really Low 09:05:19 - 09:35:19 -1264
Anarchist Mountain Observatory 09:20:19 -27.9 Dark Up 17.7 149.3 Really Low 09:05:19 - 09:35:19 -1268
Okanogan 09:20:21 -28.5 Dark Up 18.1 149.0 Really Low 09:05:21 - 09:35:21 -1312
Brewster 09:20:22 -28.8 Dark Up 18.3 148.8 Really Low 09:05:22 - 09:35:22 -1333
Manson/Chelan 09:20:24 -29.1 Dark Up 18.4 148.4 Really Low 09:05:24 - 09:35:24 -1356
Dunrhomin 09:19:23 -30.0 Dark Down 29.7 161.6 Low 09:04:23 - 09:34:23 -1387
Wenatchee 09:20:26 -29.6 Dark Up 18.7 148.2 Really Low 09:05:26 - 09:35:26 -1389
Nikitin 09:19:23 -30.2 Dark Down 29.9 161.5 Low 09:04:23 - 09:34:23 -1399
CU-SBO 09:19:24 -30.3 Dark Down 29.9 161.4 Low 09:04:24 - 09:34:24 -1406
Victoria 09:20:36 -29.3 Dark Up 16.7 145.5 Really Low 09:05:36 - 09:35:36 -1411
Ellensburg 09:20:28 -30.0 Dark Up 19.0 147.9 Really Low 09:05:28 - 09:35:28 -1420
PNWRO 09:20:23 -30.5 Dark Up 20.4 149.2 Low 09:05:23 - 09:35:23 -1432
Yakima 09:20:29 -30.4 Dark Up 19.3 147.8 Really Low 09:05:29 - 09:35:29 -1445
Toppenish/White Swan 09:20:29 -30.6 Dark Up 19.6 147.9 Really Low 09:05:29 - 09:35:29 -1454
The Dalles 09:20:33 -31.5 Dark Up 19.9 147.0 Really Low 09:05:33 - 09:35:33 -1525
Maupin 09:20:34 -31.8 Dark Up 20.3 147.1 Low 09:05:34 - 09:35:34 -1548
Sisters 09:20:38 -32.8 Dark Up 20.9 146.4 Low 09:05:38 - 09:35:38 -1619
Bend 09:20:37 -32.9 Dark Up 21.2 146.6 Low 09:05:37 - 09:35:37 -1627
Oregon Observatory 09:20:38 -33.1 Dark Up 21.3 146.5 Low 09:05:38 - 09:35:38 -1642
Chiloquin 09:20:42 -34.5 Dark Up 22.2 145.8 Low 09:05:42 - 09:35:42 -1742
Cedarville 09:20:36 -34.9 Dark Up 23.8 147.1 Low 09:05:36 - 09:35:36 -1759
Klamath Falls 09:20:42 -34.8 Dark Up 22.5 145.8 Low 09:05:42 - 09:35:42 -1763
Fall River/Burney 09:20:42 -35.7 Dark Up 23.7 145.9 Low 09:05:42 - 09:35:42 -1831
Gimple 09:20:43 -36.4 Dark Up 24.6 146.1 Low 09:05:43 - 09:35:43 -1877
Greenville 09:20:42 -36.4 Dark Up 24.6 146.1 Low 09:05:42 - 09:35:42 -1880
Reno 09:20:38 -36.6 Dark Up 25.6 147.0 Low 09:05:38 - 09:35:38 -1884
Portola 09:20:40 -36.6 Dark Up 25.1 146.4 Low 09:05:40 - 09:35:40 -1887
Quincy 09:20:42 -36.6 Dark Up 24.8 146.0 Low 09:05:42 - 09:35:42 -1894
Yerington 09:20:35 -36.9 Dark Up 26.3 147.4 Low 09:05:35 - 09:35:35 -1902
Carson City 09:20:37 -36.9 Dark Up 25.9 146.9 Low 09:05:37 - 09:35:37 -1909
Hawthorne 09:20:32 -37.1 Dark Up 26.9 147.8 Low 09:05:32 - 09:35:32 -1918
Gardnerville 09:20:39 -37.1 Dark Up 26.1 146.9 Low 09:05:39 - 09:35:39 -1925
Beatty 09:20:26 -37.9 Dark Up 29.1 149.1 Low 09:05:26 - 09:35:26 -1973
Lee Vining 09:20:36 -37.8 Dark Up 27.2 147.2 Low 09:05:36 - 09:35:36 -1974
Patrick 09:20:13 -37.9 Dark Up 31.5 151.5 Up 09:05:13 - 09:35:13 -1986
Bishop 09:20:33 -38.1 Dark Up 28.0 147.7 Low 09:05:33 - 09:35:33 -1993
Laughlin/Bullhead City 09:20:16 -38.4 Dark Up 31.4 150.8 Up 09:05:16 - 09:35:16 -2027
George/Scottsdale 09:20:02 -38.4 Dark Up 33.7 153.1 Up 09:05:02 - 09:35:02 -2044
Lake Havasu City 09:20:15 -38.9 Dark Up 32.1 150.8 Up 09:05:15 - 09:35:15 -2069
Idyllwild 09:20:28 -40.6 Dark Up 31.8 148.2 Up 09:05:28 - 09:35:28 -2206
Calipatria 09:20:22 -40.6 Dark Up 32.8 149.2 Up 09:05:22 - 09:35:22 -2213
Yuma 09:20:18 -40.5 Dark Up 33.6 149.9 Up 09:05:18 - 09:35:18 -2215
Wildwood 09:20:37 -41.0 Dark Up 30.7 146.5 Up 09:05:37 - 09:35:37 -2244

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 04HH79, (2024/04/16 09:16UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 11.96 126
35Eta Oph      17:10:22.7 -15:43:29  2.6  2.47 133
PPM 232651     17:08:14.9 -17:36:33  6.0  0.65 133
PPM 232594     17:05:48.4 -18:06:58  8.1  0.16 133
PPM 232606     17:06:16.1 -17:56:42  9.1  0.08 133
04HH79         17:05:56.4 -17:57:36 15.3       133
Positions are for J2000

Event circumstances last updated at 2023/11/04 04:10:36 UT

Marc W. Buie, Southwest Research Institute

RECON