RECON: TNO occultation with 469610

Event between (469610) 04HF79 and star GA0660:07866738 with event index number of 2254973

Geocentric closest approach at 2023/05/13 06:38:40 UTC

J2000 position of star is 16:45:26.7 -22:13:04
Equinox of date position of star is 16:46:45.0 -22:15:23
Stellar brightness G=12.4, use SENSEUP=16 with the MallinCam and and exposure time of 250 milli-seconds with the QHY174 camera.
Star is 78 degrees from the moon. Moon is 42% illuminated.
TNO apparent brightness V=22.7

[RECON map]
TNO is 42.1 AU from the Sun and 41.2 AU from the Earth.
The TNO is moving 22.8 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 648 seconds.
The 1-sigma cross-track error in the shadow position is 5356 km.
The sky-plane scale is 29880.8 km/arcsec.

The TNO has an absolute magnitude Hv=6.4
Diameter=310.5 km assuming a 5% albedo -- 13.6 sec chord
Diameter=126.7 km assuming a 30% albedo -- 5.6 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 469610, (2023/05/13 06:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:50.6 -26:28:55  0.9  5.58  81
23Tau Sco      16:37:20.5 -28:15:45  2.8  6.38  79
PPM 232040     16:43:16.3 -19:58:02  5.8  2.44  80
PPM 265879     16:45:41.8 -22:33:56  7.9  0.41  79
PPM 265928     16:47:27.0 -22:06:46  9.9  0.20  78
469610         16:46:50.7 -22:15:32 12.4        78
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 1.4 sigma about the mid-time.
The median site spacing is 16.8 km RECON observability=0.3 and success probability=3.7%
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 06:41:05 -19.6 Dark Down 9.5 143.2 Really Low 06:26:05 - 06:56:05 -2114
Kelowna 06:41:06 -19.9 Dark Down 9.8 143.1 Really Low 06:26:06 - 06:56:06 -2136
Peachland 06:41:07 -20.0 Dark Down 9.7 142.8 Really Low 06:26:07 - 06:56:07 -2148
Summerland 06:41:07 -20.1 Dark Down 9.9 142.9 Really Low 06:26:07 - 06:56:07 -2153
Penticton 06:41:07 -20.2 Dark Down 10.0 142.9 Really Low 06:26:07 - 06:56:07 -2154
Oliver 06:41:08 -20.5 Dark Down 10.3 142.9 Really Low 06:26:08 - 06:56:08 -2171
Anarchist Mountain Observatory 06:41:07 -20.7 Dark Down 10.5 143.1 Really Low 06:26:07 - 06:56:07 -2174
Tonasket 06:41:08 -21.0 Dark Down 10.7 143.0 Really Low 06:26:08 - 06:56:08 -2192
Okanogan 06:41:10 -21.3 Dark Down 10.9 142.8 Really Low 06:26:10 - 06:56:10 -2212
Brewster 06:41:10 -21.5 Dark Down 11.0 142.6 Really Low 06:26:10 - 06:56:10 -2231
Manson/Chelan 06:41:12 -21.6 Dark Down 11.1 142.3 Really Low 06:26:12 - 06:56:12 -2251
Wenatchee 06:41:13 -22.0 Dark Down 11.4 142.1 Really Low 06:26:13 - 06:56:13 -2280
Dunrhomin 06:40:42 -31.3 Dark Down 23.1 154.2 Low 06:25:42 - 06:55:42 -2300
Victoria 06:41:18 -20.3 Dark Down 9.2 139.6 Really Low 06:26:18 - 06:56:18 -2301
Ellensburg 06:41:15 -22.4 Dark Down 11.6 141.8 Really Low 06:26:15 - 06:56:15 -2307
Pasco 06:41:13 -23.4 Dark Down 12.8 142.9 Really Low 06:26:13 - 06:56:13 -2310
PNWRO 06:41:13 -23.7 Dark Down 13.1 143.1 Really Low 06:26:13 - 06:56:13 -2318
Yakima 06:41:16 -22.8 Dark Down 11.9 141.8 Really Low 06:26:16 - 06:56:16 -2329
Toppenish/White Swan 06:41:15 -23.0 Dark Down 12.2 141.9 Really Low 06:26:15 - 06:56:15 -2336
Goldendale 06:41:18 -23.4 Dark Down 12.4 141.5 Really Low 06:26:18 - 06:56:18 -2377
The Dalles 06:41:19 -23.6 Dark Down 12.4 141.1 Really Low 06:26:19 - 06:56:19 -2400
Maupin 06:41:20 -24.0 Dark Down 12.8 141.2 Really Low 06:26:20 - 06:56:20 -2420
Redmond 06:41:22 -24.8 Dark Down 13.5 141.0 Really Low 06:26:22 - 06:56:22 -2473
Sisters 06:41:23 -24.7 Dark Down 13.3 140.6 Really Low 06:26:23 - 06:56:23 -2483
Bend 06:41:23 -25.0 Dark Down 13.6 140.8 Really Low 06:26:23 - 06:56:23 -2489
Oregon Observatory 06:41:23 -25.1 Dark Down 13.7 140.7 Really Low 06:26:23 - 06:56:23 -2503
La Pine/Gilchrist 06:41:24 -25.3 Dark Down 13.8 140.6 Really Low 06:26:24 - 06:56:24 -2516
North Lake 06:41:24 -25.8 Dark Down 14.4 141.0 Really Low 06:26:24 - 06:56:24 -2525
Paisley 06:41:23 -26.4 Dark Down 15.0 141.2 Really Low 06:26:23 - 06:56:23 -2548
Lakeview 06:41:24 -27.0 Dark Down 15.5 141.3 Really Low 06:26:24 - 06:56:24 -2573
Chiloquin 06:41:26 -26.2 Dark Down 14.5 140.1 Really Low 06:26:26 - 06:56:26 -2592
Cedarville 06:41:24 -27.6 Dark Down 16.1 141.3 Really Low 06:26:24 - 06:56:24 -2608
Klamath Falls 06:41:27 -26.6 Dark Down 14.8 140.2 Really Low 06:26:27 - 06:56:27 -2610
Fall River/Burney 06:41:29 -27.8 Dark Down 15.9 140.3 Really Low 06:26:29 - 06:56:29 -2672
Susanville 06:41:28 -28.5 Dark Down 16.7 140.8 Really Low 06:26:28 - 06:56:28 -2690
Gimple 06:41:29 -28.7 Dark Down 16.8 140.5 Really Low 06:26:29 - 06:56:29 -2714
Greenville 06:41:29 -28.7 Dark Down 16.8 140.5 Really Low 06:26:29 - 06:56:29 -2716
Reno 06:41:27 -29.6 Dark Down 17.8 141.3 Really Low 06:26:27 - 06:56:27 -2722
Portola 06:41:28 -29.2 Dark Down 17.3 140.8 Really Low 06:26:28 - 06:56:28 -2723
Quincy 06:41:29 -28.9 Dark Down 17.0 140.4 Really Low 06:26:29 - 06:56:29 -2729
Yerington 06:41:26 -30.3 Dark Down 18.6 141.7 Really Low 06:26:26 - 06:56:26 -2738
Tonopah 06:41:22 -31.6 Dark Down 20.2 143.1 Low 06:26:22 - 06:56:22 -2743
Carson City 06:41:28 -29.9 Dark Down 18.1 141.2 Really Low 06:26:28 - 06:56:28 -2744
Hawthorne 06:41:25 -30.9 Dark Down 19.2 142.0 Really Low 06:26:25 - 06:56:25 -2753
Gardnerville 06:41:28 -30.2 Dark Down 18.3 141.2 Really Low 06:26:28 - 06:56:28 -2758
Indian Springs 06:41:19 -33.4 Dark Down 22.1 144.1 Low 06:26:19 - 06:56:19 -2797
Lee Vining 06:41:28 -31.3 Dark Down 19.4 141.5 Really Low 06:26:28 - 06:56:28 -2804
Beatty 06:41:22 -32.9 Dark Down 21.4 143.3 Low 06:26:22 - 06:56:22 -2806
Henderson 06:41:18 -34.1 Dark Down 22.9 144.6 Low 06:26:18 - 06:56:18 -2814
Bishop 06:41:26 -32.0 Dark Down 20.2 142.0 Low 06:26:26 - 06:56:26 -2823
Patrick 06:41:15 -34.9 Dark Down 23.9 145.4 Low 06:26:15 - 06:56:15 -2824
Kingman/Dolan Springs 06:41:16 -35.1 Dark Down 24.0 145.1 Low 06:26:16 - 06:56:16 -2845
Laughlin/Bullhead City 06:41:18 -35.0 Dark Down 23.8 144.7 Low 06:26:18 - 06:56:18 -2861
Mohave Valley 06:41:19 -35.3 Dark Down 24.0 144.6 Low 06:26:19 - 06:56:19 -2880
George/Scottsdale 06:41:11 -37.0 Dark Down 26.2 146.7 Low 06:26:11 - 06:56:11 -2884
Lake Havasu City 06:41:18 -35.7 Dark Down 24.5 144.7 Low 06:26:18 - 06:56:18 -2900
Parker 06:41:19 -36.1 Dark Down 24.8 144.7 Low 06:26:19 - 06:56:19 -2924
Blythe 06:41:20 -36.5 Dark Down 25.0 144.3 Low 06:26:20 - 06:56:20 -2969
Idyllwild 06:41:27 -35.9 Dark Down 23.9 142.5 Low 06:26:27 - 06:56:27 -3022
Calipatria 06:41:24 -36.8 Dark Down 25.0 143.3 Low 06:26:24 - 06:56:24 -3031
CPSLO 06:41:36 -33.3 Dark Down 20.7 139.7 Low 06:26:36 - 06:56:36 -3031
Yuma 06:41:22 -37.4 Dark Down 25.8 144.0 Low 06:26:22 - 06:56:22 -3035
Wildwood 06:41:32 -35.0 Dark Down 22.7 141.0 Low 06:26:32 - 06:56:32 -3053

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 469610, (2023/05/13 06:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  5.58  81
23Tau Sco      16:35:52.9 -28:12:58  2.8  6.38  79
PPM 232040     16:41:53.8 -19:55:27  5.8  2.44  80
PPM 265879     16:44:17.7 -22:31:25  7.9  0.41  79
PPM 265928     16:46:03.1 -22:04:19  9.9  0.20  78
469610         16:45:26.7 -22:13:04 12.4        78
Positions are for J2000

Event circumstances last updated at 2021/10/17 01:14:33 UT

Marc W. Buie, Southwest Research Institute

RECON