RECON: TNO occultation with 84922

Event between (84922) 03VS2 and star GA1200:02210560 with event index number of 1419214

Geocentric closest approach at 2025/01/16 10:12:11 UTC

J2000 position of star is 06:02:02.2 +31:30:32
Equinox of date position of star is 06:03:20.2 +31:30:28
Stellar brightness G=13.6, use SENSEUP=64
Star is 56 degrees from the moon. Moon is 93% illuminated.
TNO apparent brightness V=19.9

[RECON map]
TNO is 36.9 AU from the Sun and 36.0 AU from the Earth.
The TNO is moving 22.5 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 330 seconds.
The 1-sigma cross-track error in the shadow position is 2305 km.
The sky-plane scale is 26128.7 km/arcsec.

The TNO has an absolute magnitude Hv=4.2
Diameter=871.0 km assuming a 5% albedo -- 38.6 sec chord
Diameter=355.6 km assuming a 30% albedo -- 15.8 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 84922, (2025/01/16 10:12UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:50.9 +27:57:49  1.1 22.62  33
Alnath         05:27:52.6 +28:37:35  1.6  8.26  64
PPM 071108     06:02:47.1 +31:02:00  6.0  0.51  56
PPM 071151     06:04:59.0 +31:23:16  7.5  0.31  56
PPM 071110     06:02:52.3 +31:32:23  9.5  0.17  56
84922          06:03:39.7 +31:30:26 13.6        56
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 2.7 sigma about the mid-time.
The median site spacing is 21.3 km RECON observability=1.0 and success probability=14.8%
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 10:09:21 -52.0 Dark Up 43.3 269.4 Up 09:54:21 - 10:24:21 3065
Kelowna 10:09:20 -52.3 Dark Up 43.4 269.7 Up 09:54:20 - 10:24:20 3024
Summerland 10:09:19 -52.6 Dark Up 43.5 269.8 Up 09:54:19 - 10:24:19 2994
Penticton 10:09:20 -52.6 Dark Up 43.5 269.9 Up 09:54:20 - 10:24:20 2991
Oliver 10:09:18 -52.8 Dark Up 43.5 270.2 Up 09:54:18 - 10:24:18 2958
Anarchist Mountain Observatory 10:09:17 -52.8 Dark Up 43.3 270.6 Up 09:54:17 - 10:24:17 2948
Tonasket 10:09:17 -53.0 Dark Up 43.4 270.8 Up 09:54:17 - 10:24:17 2916
Okanogan 10:09:16 -53.3 Dark Up 43.5 271.0 Up 09:54:16 - 10:24:16 2881
Brewster 10:09:16 -53.6 Dark Up 43.6 271.1 Up 09:54:16 - 10:24:16 2849
Manson/Chelan 10:09:16 -53.9 Dark Up 43.8 271.0 Up 09:54:16 - 10:24:16 2819
Entiat 10:09:16 -54.1 Dark Up 43.9 271.2 Up 09:54:16 - 10:24:16 2797
Victoria 10:09:24 -55.2 Dark Up 46.0 268.0 Up 09:54:24 - 10:24:24 2794
Wenatchee 10:09:15 -54.3 Dark Up 44.0 271.4 Up 09:54:15 - 10:24:15 2770
Ellensburg 10:09:15 -54.7 Dark Up 44.1 271.6 Up 09:54:15 - 10:24:15 2724
Pasco 10:09:10 -54.4 Dark Up 43.1 273.3 Up 09:54:10 - 10:24:10 2693
Yakima 10:09:13 -54.9 Dark Up 44.1 272.0 Up 09:54:13 - 10:24:13 2684
PNWRO 10:09:09 -54.4 Dark Up 42.9 273.7 Up 09:54:09 - 10:24:09 2676
Toppenish/White Swan 10:09:13 -55.0 Dark Up 44.0 272.3 Up 09:54:13 - 10:24:13 2668
Goldendale 10:09:12 -55.6 Dark Up 44.3 272.5 Up 09:54:12 - 10:24:12 2603
Niwot 10:08:31 -47.6 Dark Up 32.2 286.1 Up 09:53:31 - 10:23:31 2589
SwRI 10:08:30 -47.7 Dark Up 32.2 286.1 Up 09:53:30 - 10:23:30 2575
The Dalles 10:09:13 -55.9 Dark Up 44.5 272.5 Up 09:54:13 - 10:24:13 2571
Maupin 10:09:11 -56.1 Dark Up 44.4 273.0 Up 09:54:11 - 10:24:11 2533
Redmond 10:09:10 -56.7 Dark Up 44.4 273.8 Up 09:54:10 - 10:24:10 2442
Sisters 10:09:11 -56.9 Dark Up 44.7 273.5 Up 09:54:11 - 10:24:11 2433
Bend 10:09:10 -56.9 Dark Up 44.5 273.9 Up 09:54:10 - 10:24:10 2417
Oregon Observatory 10:09:09 -57.1 Dark Up 44.6 274.0 Up 09:54:09 - 10:24:09 2397
La Pine/Gilchrist 10:09:09 -57.2 Dark Up 44.6 274.2 Up 09:54:09 - 10:24:09 2375
North Lake 10:09:06 -57.1 Dark Up 44.2 275.0 Up 09:54:06 - 10:24:06 2350
Paisley 10:09:04 -57.2 Dark Up 43.8 275.7 Up 09:54:04 - 10:24:04 2306
Lakeview 10:09:03 -57.3 Dark Up 43.7 276.3 Up 09:54:03 - 10:24:03 2262
Klamath Falls 10:09:06 -58.2 Dark Up 44.7 275.4 Up 09:54:06 - 10:24:06 2223
Cedarville 10:09:01 -57.6 Dark Up 43.5 277.0 Up 09:54:01 - 10:24:01 2202
Fall River/Burney 10:09:02 -58.6 Dark Up 44.3 276.8 Up 09:54:02 - 10:24:02 2117
Susanville 10:08:59 -58.4 Dark Up 43.7 277.8 Up 09:53:59 - 10:23:59 2077
Gimple 10:09:00 -58.7 Dark Up 43.8 278.0 Up 09:54:00 - 10:24:00 2043
Greenville 10:09:00 -58.8 Dark Up 43.9 277.9 Up 09:54:00 - 10:24:00 2040
Portola 10:08:58 -58.6 Dark Up 43.5 278.5 Up 09:53:58 - 10:23:58 2022
Quincy 10:08:59 -58.9 Dark Up 43.8 278.1 Up 09:53:59 - 10:23:59 2020
Reno 10:08:56 -58.3 Dark Up 42.9 279.1 Up 09:53:56 - 10:23:56 2016
Yerington 10:08:53 -58.1 Dark Up 42.3 279.9 Up 09:53:53 - 10:23:53 1982
Carson City 10:08:55 -58.5 Dark Up 42.9 279.4 Up 09:53:55 - 10:23:55 1981
Gardnerville 10:08:55 -58.5 Dark Up 42.8 279.7 Up 09:53:55 - 10:23:55 1958
Tonopah 10:08:48 -57.1 Dark Up 40.7 281.7 Up 09:53:48 - 10:23:48 1954
Hawthorne 10:08:51 -57.9 Dark Up 41.9 280.6 Up 09:53:51 - 10:23:51 1953
Lee Vining 10:08:51 -58.5 Dark Up 42.1 280.8 Up 09:53:51 - 10:23:51 1880
Indian Springs 10:08:41 -56.5 Dark Up 39.2 283.6 Up 09:53:41 - 10:23:41 1859
Beatty 10:08:44 -57.2 Dark Up 40.1 282.8 Up 09:53:44 - 10:23:44 1854
Bishop 10:08:48 -58.2 Dark Up 41.5 281.7 Up 09:53:48 - 10:23:48 1845
Henderson 10:08:38 -56.1 Dark Up 38.5 284.3 Up 09:53:38 - 10:23:38 1831
Patrick 10:08:35 -55.5 Dark Up 37.5 285.2 Up 09:53:35 - 10:23:35 1810
DCO 10:08:33 -55.0 Dark Up 36.9 285.7 Up 09:53:33 - 10:23:33 1806
Kingman/Dolan Springs 10:08:35 -55.7 Dark Up 37.6 285.3 Up 09:53:35 - 10:23:35 1781
Searchlight/Boulder City 10:08:37 -56.3 Dark Up 38.3 284.8 Up 09:53:37 - 10:23:37 1776
Laughlin/Bullhead City 10:08:36 -56.1 Dark Up 38.0 285.1 Up 09:53:36 - 10:23:36 1759
Mohave Valley 10:08:35 -56.1 Dark Up 37.9 285.3 Up 09:53:35 - 10:23:35 1732
George/Scottsdale 10:08:28 -54.3 Dark Up 35.5 287.2 Up 09:53:28 - 10:23:28 1718
Lake Havasu City 10:08:34 -56.1 Dark Up 37.6 285.7 Up 09:53:34 - 10:23:34 1702
Parker 10:08:33 -56.1 Dark Up 37.5 286.0 Up 09:53:33 - 10:23:33 1668
Blythe 10:08:33 -56.5 Dark Up 37.6 286.3 Up 09:53:33 - 10:23:33 1605
CPSLO 10:08:50 -60.7 Dark Up 42.8 282.5 Up 09:53:50 - 10:23:50 1561
Idyllwild 10:08:38 -58.2 Dark Up 39.3 285.4 Up 09:53:38 - 10:23:38 1539
Calipatria 10:08:34 -57.4 Dark Up 38.2 286.3 Up 09:53:34 - 10:23:34 1521
Yuma 10:08:31 -56.7 Dark Up 37.4 286.9 Up 09:53:31 - 10:23:31 1511
Wildwood 10:08:43 -59.5 Dark Up 40.9 284.4 Up 09:53:43 - 10:23:43 1508

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 84922, (2025/01/16 10:12UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 22.62  33
Alnath         05:26:17.5 +28:36:23  1.6  8.26  64
PPM 071108     06:01:10.0 +31:02:04  6.0  0.51  56
PPM 071151     06:03:21.6 +31:23:25  7.5  0.31  56
PPM 071110     06:01:14.7 +31:32:28  9.5  0.17  56
84922          06:02:02.2 +31:30:32 13.6        56
Positions are for J2000

Event circumstances last updated at 2020/01/07 23:18:29 UT

Marc W. Buie, Southwest Research Institute

RECON