RECON: TNO occultation with 04HC79

Event between 04HC79 and star GA0660:10230962 with event index number of 1969847

Geocentric closest approach at 2024/08/07 06:14:39 UTC

J2000 position of star is 17:11:38.0 -23:16:18
Equinox of date position of star is 17:13:00.9 -23:17:52
Stellar brightness G=15.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 92 degrees from the moon. Moon is 7% illuminated.
TNO apparent brightness V=23.2

[RECON map]
TNO is 40.0 AU from the Sun and 39.4 AU from the Earth.
The TNO is moving 11.2 km/sec on the sky relative to the star, or, 1.4 arcsec/hr.
The 1-sigma error in the time of the event is 551 seconds.
The 1-sigma cross-track error in the shadow position is 3496 km.
The sky-plane scale is 28558.9 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=232.3 km assuming a 5% albedo -- 20.6 sec chord
Diameter=94.8 km assuming a 30% albedo -- 8.4 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 04HC79, (2024/08/07 06:15UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:55.2 -26:29:04  0.9 10.08  83
35Eta Oph      17:11:47.5 -15:45:13  2.6  7.55  91
PPM 266403     17:07:40.1 -21:35:48  6.3  2.12  91
PPM 266547     17:13:52.7 -22:57:11  8.2  0.39  93
PPM 266544     17:13:44.8 -23:11:26  9.3  0.18  93
04HC79         17:13:07.4 -23:18:00 15.9        93
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 1.6 sigma about the mid-time.
The median site spacing is 18.8 km RECON observability=0.5 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)
Kamloops 06:12:18 -18.5 Dark Down 11.1 208.9 Really Low 05:57:18 - 06:27:18 -2385
Kelowna 06:12:09 -19.4 Dark Down 11.6 209.7 Really Low 05:57:09 - 06:27:09 -2419
Peachland 06:12:11 -19.5 Dark Down 11.8 209.5 Really Low 05:57:11 - 06:27:11 -2420
Summerland 06:12:09 -19.6 Dark Down 11.9 209.6 Really Low 05:57:09 - 06:27:09 -2426
Penticton 06:12:07 -19.7 Dark Down 11.9 209.7 Really Low 05:57:07 - 06:27:07 -2430
Victoria 06:12:27 -19.3 Dark Down 13.9 206.4 Really Low 05:57:27 - 06:27:27 -2430
Oliver 06:12:07 -20.0 Dark Down 12.2 209.7 Really Low 05:57:07 - 06:27:07 -2442
Anarchist Mountain Observatory 06:12:05 -20.2 Dark Down 12.3 209.9 Really Low 05:57:05 - 06:27:05 -2449
Tonasket 06:12:05 -20.5 Dark Down 12.6 209.9 Really Low 05:57:05 - 06:27:05 -2460
Okanogan 06:12:03 -20.7 Dark Down 12.9 209.8 Really Low 05:57:03 - 06:27:03 -2470
Brewster 06:12:03 -20.9 Dark Down 13.2 209.6 Really Low 05:57:03 - 06:27:03 -2478
Manson/Chelan 06:12:06 -21.0 Dark Down 13.5 209.3 Really Low 05:57:06 - 06:27:06 -2482
Wenatchee 06:12:04 -21.3 Dark Down 14.0 209.2 Really Low 05:57:04 - 06:27:04 -2498
Ellensburg 06:12:04 -21.6 Dark Down 14.4 209.1 Really Low 05:57:04 - 06:27:04 -2511
Sleaford 06:11:13 -20.5 Dark Down 4.9 220.9 Really Low 05:56:13 - 06:26:13 -2513
Yakima 06:12:03 -21.9 Dark Down 14.8 209.1 Really Low 05:57:03 - 06:27:03 -2527
Toppenish/White Swan 06:12:00 -22.2 Dark Down 14.9 209.3 Really Low 05:57:00 - 06:27:00 -2537
Goldendale 06:12:00 -22.5 Dark Down 15.5 209.0 Really Low 05:57:00 - 06:27:00 -2555
The Dalles 06:12:03 -22.6 Dark Down 15.9 208.7 Really Low 05:57:03 - 06:27:03 -2561
PNWRO 06:11:50 -23.0 Dark Down 14.7 210.6 Really Low 05:56:50 - 06:26:50 -2567
Maupin 06:12:00 -23.0 Dark Down 16.2 208.8 Really Low 05:57:00 - 06:27:00 -2579
Sisters 06:12:00 -23.5 Dark Down 17.1 208.5 Really Low 05:57:00 - 06:27:00 -2611
Bend 06:11:57 -23.8 Dark Down 17.3 208.8 Really Low 05:56:57 - 06:26:57 -2623
Oregon Observatory 06:11:58 -23.9 Dark Down 17.5 208.7 Really Low 05:56:58 - 06:26:58 -2630
North Lake 06:11:52 -24.7 Dark Down 17.8 209.2 Really Low 05:56:52 - 06:26:52 -2663
Chiloquin 06:11:55 -24.9 Dark Down 18.8 208.5 Really Low 05:56:55 - 06:26:55 -2684
Klamath Falls 06:11:54 -25.2 Dark Down 19.0 208.6 Really Low 05:56:54 - 06:26:54 -2701
Lakeview 06:11:44 -25.8 Dark Down 18.6 209.9 Really Low 05:56:44 - 06:26:44 -2717
Cedarville 06:11:41 -26.4 Dark Down 19.1 210.1 Really Low 05:56:41 - 06:26:41 -2750
Fall River/Burney 06:11:47 -26.3 Dark Down 19.9 209.2 Really Low 05:56:47 - 06:26:47 -2761
Susanville 06:11:39 -27.2 Dark Down 20.2 209.9 Low 05:56:39 - 06:26:39 -2800
Greenville 06:11:41 -27.3 Dark Down 20.6 209.7 Low 05:56:41 - 06:26:41 -2810
Gimple 06:11:40 -27.3 Dark Down 20.5 209.8 Low 05:56:40 - 06:26:40 -2812
Quincy 06:11:39 -27.5 Dark Down 20.8 209.7 Low 05:56:39 - 06:26:39 -2821
Portola 06:11:37 -27.7 Dark Down 20.7 210.2 Low 05:56:37 - 06:26:37 -2832
Reno 06:11:31 -28.2 Dark Down 20.7 210.8 Low 05:56:31 - 06:26:31 -2853
Carson City 06:11:30 -28.5 Dark Down 21.0 210.9 Low 05:56:30 - 06:26:30 -2871
Gardnerville 06:11:28 -28.8 Dark Down 21.2 211.0 Low 05:56:28 - 06:26:28 -2885
Yerington 06:11:25 -29.0 Dark Down 20.9 211.5 Low 05:56:25 - 06:26:25 -2889
Hawthorne 06:11:20 -29.6 Dark Down 21.1 212.0 Low 05:56:20 - 06:26:20 -2920
Lee Vining 06:11:21 -29.8 Dark Down 21.8 211.7 Low 05:56:21 - 06:26:21 -2944
Tonopah 06:11:09 -30.5 Dark Down 20.9 213.3 Low 05:56:09 - 06:26:09 -2962
Bishop 06:11:13 -30.6 Dark Down 22.0 212.4 Low 05:56:13 - 06:26:13 -2986
Beatty 06:11:01 -31.7 Dark Down 21.7 213.9 Low 05:56:01 - 06:26:01 -3033
Dunrhomin 06:10:06 -32.0 Dark Down 13.5 222.6 Really Low 05:55:06 - 06:25:06 -3035
CU-SBO 06:10:06 -32.2 Dark Down 13.8 222.5 Really Low 05:55:06 - 06:25:06 -3047
Indian Springs 06:10:53 -32.4 Dark Down 21.5 214.9 Low 05:55:53 - 06:25:53 -3066
Henderson 06:10:47 -33.1 Dark Down 21.6 215.6 Low 05:55:47 - 06:25:47 -3107
Patrick 06:10:36 -34.0 Dark Down 21.6 216.6 Low 05:55:36 - 06:25:36 -3160
Laughlin/Bullhead City 06:10:41 -34.0 Dark Down 22.1 216.1 Low 05:55:41 - 06:25:41 -3164
Kingman/Dolan Springs 06:10:37 -34.2 Dark Down 21.9 216.5 Low 05:55:37 - 06:25:37 -3170
Wildwood 06:11:04 -33.3 Dark Down 24.8 213.0 Low 05:56:04 - 06:26:04 -3173
Mohave Valley 06:10:40 -34.2 Dark Down 22.3 216.2 Low 05:55:40 - 06:25:40 -3181
Lake Havasu City 06:10:37 -34.7 Dark Down 22.5 216.5 Low 05:55:37 - 06:25:37 -3208
Idyllwild 06:10:50 -34.4 Dark Down 24.3 214.7 Low 05:55:50 - 06:25:50 -3219
Parker 06:10:35 -35.0 Dark Down 22.8 216.6 Low 05:55:35 - 06:25:35 -3230
Calipatria 06:10:39 -35.4 Dark Down 24.2 215.8 Low 05:55:39 - 06:25:39 -3275
George/Scottsdale 06:10:17 -36.3 Dark Down 22.0 218.6 Low 05:55:17 - 06:25:17 -3295
Yuma 06:10:32 -36.2 Dark Down 24.2 216.6 Low 05:55:32 - 06:25:32 -3315

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 04HC79, (2024/08/07 06:15UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 10.08  83
35Eta Oph      17:10:22.7 -15:43:29  2.6  7.55  91
PPM 266403     17:06:11.8 -21:33:54  6.3  2.12  91
PPM 266547     17:12:23.4 -22:55:31  8.2  0.39  93
PPM 266544     17:12:15.3 -23:09:45  9.3  0.18  93
04HC79         17:11:38.0 -23:16:18 15.9        92
Positions are for J2000

Event circumstances last updated at 2022/10/21 03:19:15 UT

Marc W. Buie, Southwest Research Institute

RECON