RECON: TNO occultation with 468861

Event between (468861) 13LU28 and star GA1220:02766284 with event index number of 1429272

Geocentric closest approach at 2025/04/01 05:17:50 UTC

J2000 position of star is 06:30:44.0 +33:00:21
Equinox of date position of star is 06:32:03.4 +32:59:26
Stellar brightness G=16.0, use SENSEUP=128
Star is 46 degrees from the moon. Moon is 11% illuminated.
TNO apparent brightness V=20.0

[RECON map]
TNO is 8.9 AU from the Sun and 8.9 AU from the Earth.
The TNO is moving 17.3 km/sec on the sky relative to the star, or, 9.6 arcsec/hr.
The 1-sigma error in the time of the event is 588 seconds.
The 1-sigma cross-track error in the shadow position is 5737 km.
The sky-plane scale is 6468.4 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=138.0 km assuming a 5% albedo -- 3.5 sec chord
Diameter=56.4 km assuming a 30% albedo -- 1.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 468861, (2025/04/01 05:18UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:51.7 +27:57:47  1.1 16.79  62
34Bet Aur      06:01:22.9 +44:56:50  1.9 13.38  42
PPM 071742     06:34:06.0 +32:26:05  6.0  0.66  46
PPM 071716     06:32:59.0 +33:05:59  9.7  0.17  46
468861         06:32:23.4 +32:59:12 16.0        46
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 1.5 sigma about the mid-time.
The median site spacing is 20.6 km RECON observability=1.0 and success probability=8.1%
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 05:14:17 -24.4 Dark Up 48.9 265.3 Up 04:59:17 - 05:29:17 -1638
Victoria 05:14:33 -23.6 Dark Up 51.7 264.0 Up 04:59:33 - 05:29:33 -1666
Kelowna 05:14:18 -24.6 Dark Up 49.0 265.6 Up 04:59:18 - 05:29:18 -1670
Peachland 05:14:20 -24.6 Dark Up 49.2 265.5 Up 04:59:20 - 05:29:20 -1672
Summerland 05:14:20 -24.7 Dark Up 49.2 265.8 Up 04:59:20 - 05:29:20 -1689
Penticton 05:14:20 -24.8 Dark Up 49.1 265.9 Up 04:59:20 - 05:29:20 -1698
Oliver 05:14:21 -25.1 Dark Up 49.1 266.3 Up 04:59:21 - 05:29:21 -1732
Anarchist Mountain Observatory 05:14:21 -25.3 Dark Up 49.0 266.7 Up 04:59:21 - 05:29:21 -1754
Tonasket 05:14:22 -25.4 Dark Up 49.1 267.0 Up 04:59:22 - 05:29:22 -1781
Okanogan 05:14:23 -25.6 Dark Up 49.2 267.3 Up 04:59:23 - 05:29:23 -1808
Brewster 05:14:25 -25.7 Dark Up 49.3 267.4 Up 04:59:25 - 05:29:25 -1827
Manson/Chelan 05:14:27 -25.6 Dark Up 49.6 267.4 Up 04:59:27 - 05:29:27 -1835
Entiat 05:14:28 -25.8 Dark Up 49.6 267.6 Up 04:59:28 - 05:29:28 -1853
Wenatchee 05:14:28 -25.9 Dark Up 49.7 267.8 Up 04:59:28 - 05:29:28 -1874
Ellensburg 05:14:31 -26.0 Dark Up 49.8 268.1 Up 04:59:31 - 05:29:31 -1905
Yakima 05:14:32 -26.3 Dark Up 49.9 268.6 Up 04:59:32 - 05:29:32 -1942
Toppenish/White Swan 05:14:33 -26.5 Dark Up 49.8 269.0 Up 04:59:33 - 05:29:33 -1968
Goldendale 05:14:35 -26.7 Dark Up 50.0 269.4 Up 04:59:35 - 05:29:35 -2004
The Dalles 05:14:38 -26.6 Dark Up 50.3 269.4 Up 04:59:38 - 05:29:38 -2012
Pasco 05:14:29 -27.3 Dark Up 48.9 270.1 Up 04:59:29 - 05:29:29 -2021
PNWRO 05:14:30 -27.5 Dark Up 48.7 270.5 Up 04:59:30 - 05:29:30 -2051
Maupin 05:14:39 -27.0 Dark Up 50.2 269.9 Up 04:59:39 - 05:29:39 -2054
Sisters 05:14:43 -27.3 Dark Up 50.6 270.7 Up 04:59:43 - 05:29:43 -2117
Redmond 05:14:43 -27.5 Dark Up 50.3 271.0 Up 04:59:43 - 05:29:43 -2134
Bend 05:14:43 -27.5 Dark Up 50.4 271.1 Up 04:59:43 - 05:29:43 -2148
Oregon Observatory 05:14:45 -27.6 Dark Up 50.5 271.3 Up 04:59:45 - 05:29:45 -2159
La Pine/Gilchrist 05:14:46 -27.7 Dark Up 50.5 271.5 Up 04:59:46 - 05:29:46 -2175
North Lake 05:14:45 -28.3 Dark Up 50.0 272.4 Up 04:59:45 - 05:29:45 -2236
Klamath Falls 05:14:51 -28.4 Dark Up 50.6 273.1 Up 04:59:51 - 05:29:51 -2295
Paisley 05:14:46 -28.9 Dark Up 49.7 273.3 Up 04:59:46 - 05:29:46 -2298
Lakeview 05:14:48 -29.3 Dark Up 49.6 274.0 Up 04:59:48 - 05:29:48 -2351
Fall River/Burney 05:14:55 -29.4 Dark Up 50.2 274.7 Up 04:59:55 - 05:29:55 -2413
Cedarville 05:14:50 -29.8 Dark Up 49.4 274.9 Up 04:59:50 - 05:29:50 -2416
Susanville 05:14:55 -30.2 Dark Up 49.6 275.9 Up 04:59:55 - 05:29:55 -2497
Greenville 05:14:57 -30.2 Dark Up 49.8 276.1 Up 04:59:57 - 05:29:57 -2510
Gimple 05:14:57 -30.3 Dark Up 49.7 276.1 Up 04:59:57 - 05:29:57 -2513
Quincy 05:14:58 -30.4 Dark Up 49.8 276.3 Up 04:59:58 - 05:29:58 -2528
Portola 05:14:57 -30.7 Dark Up 49.4 276.7 Up 04:59:57 - 05:29:57 -2557
Reno 05:14:56 -31.3 Dark Up 48.9 277.4 Up 04:59:56 - 05:29:56 -2604
Carson City 05:14:57 -31.5 Dark Up 48.8 277.8 Up 04:59:57 - 05:29:57 -2636
Gardnerville 05:14:59 -31.7 Dark Up 48.7 278.1 Up 04:59:59 - 05:29:59 -2659
Yerington 05:14:56 -32.0 Dark Up 48.3 278.3 Up 04:59:56 - 05:29:56 -2676
Hawthorne 05:14:57 -32.6 Dark Up 47.8 279.1 Up 04:59:57 - 05:29:57 -2735
Lee Vining 05:15:00 -32.7 Dark Up 48.1 279.5 Up 05:00:00 - 05:30:00 -2767
Tonopah 05:14:54 -33.8 Dark Up 46.7 280.3 Up 04:59:54 - 05:29:54 -2825
Bishop 05:15:01 -33.5 Dark Up 47.4 280.5 Up 05:00:01 - 05:30:01 -2844
CPSLO 05:15:15 -33.4 Dark Up 48.8 281.8 Up 05:00:15 - 05:30:15 -2933
Beatty 05:14:57 -34.8 Dark Up 46.1 281.7 Up 04:59:57 - 05:29:57 -2941
Niwot 05:14:10 -38.6 Dark Down 38.1 284.2 Up 04:59:10 - 05:29:10 -2947
SwRI 05:14:11 -38.6 Dark Down 38.1 284.2 Up 04:59:11 - 05:29:11 -2955
Indian Springs 05:14:55 -35.7 Dark Up 45.2 282.5 Up 04:59:55 - 05:29:55 -3005
Henderson 05:14:54 -36.5 Dark Up 44.5 283.3 Up 04:59:54 - 05:29:54 -3073
Wildwood 05:15:14 -35.4 Dark Up 46.9 283.9 Up 05:00:14 - 05:30:14 -3113
Searchlight/Boulder City 05:14:56 -36.9 Dark Up 44.3 283.8 Up 04:59:56 - 05:29:56 -3125
Laughlin/Bullhead City 05:14:57 -37.3 Dark Down 44.0 284.3 Up 04:59:57 - 05:29:57 -3161
Patrick 05:14:53 -37.6 Dark Down 43.5 284.3 Up 04:59:53 - 05:29:53 -3162
Kingman/Dolan Springs 05:14:55 -37.6 Dark Down 43.6 284.4 Up 04:59:55 - 05:29:55 -3176
Mohave Valley 05:14:57 -37.5 Dark Down 43.9 284.5 Up 04:59:57 - 05:29:57 -3184
DCO 05:14:52 -38.2 Dark Down 42.8 284.8 Up 04:59:52 - 05:29:52 -3210
Idyllwild 05:15:09 -36.9 Dark Up 45.3 284.9 Up 05:00:09 - 05:30:09 -3212
Lake Havasu City 05:14:58 -37.9 Dark Down 43.6 285.0 Up 04:59:58 - 05:29:58 -3226
Parker 05:14:59 -38.1 Dark Down 43.5 285.3 Up 04:59:59 - 05:29:59 -3257
Blythe 05:15:03 -38.3 Dark Down 43.5 285.7 Up 05:00:03 - 05:30:03 -3292
Calipatria 05:15:07 -38.0 Dark Down 44.1 285.8 Up 05:00:07 - 05:30:07 -3302
George/Scottsdale 05:14:53 -39.9 Dark Down 41.4 286.5 Up 04:59:53 - 05:29:53 -3366
Yuma 05:15:06 -38.9 Dark Down 43.3 286.5 Up 05:00:06 - 05:30:06 -3368

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 468861, (2025/04/01 05:18UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 16.79  62
34Bet Aur      05:59:31.6 +44:56:51  1.9 13.38  42
PPM 071742     06:32:27.1 +32:27:18  6.0  0.66  46
PPM 071716     06:31:19.6 +33:07:09  9.7  0.17  46
468861         06:30:44.0 +33:00:21 16.0        46
Positions are for J2000

Event circumstances last updated at 2020/03/02 22:05:34 UT

Marc W. Buie, Southwest Research Institute

RECON