RECON: TNO occultation with 04XX190

Event between 04XX190 and star GA1120:02655235 with event index number of 1803814

Geocentric closest approach at 2028/01/20 11:25:22 UTC

J2000 position of star is 07:07:33.3 +23:26:07
Equinox of date position of star is 07:08:48.6 +23:24:05
Stellar brightness G=11.1, use SENSEUP=8
Star is 125 degrees from the moon. Moon is 33% illuminated.
TNO apparent brightness V=26.3

[RECON map]
TNO is 42.5 AU from the Sun and 41.5 AU from the Earth.
The TNO is moving 24.7 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 1096 seconds.
The 1-sigma cross-track error in the shadow position is 3002 km.
The sky-plane scale is 30122.9 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=237.7 km assuming a 5% albedo -- 2.4 sec chord
Diameter=97.0 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 04XX190, (2028/01/20 11:25UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:47:02.1 +27:57:22  1.1  9.66 117
44 Gem         07:06:59.6 +22:35:35  5.9  0.95 125
PPM 097045     07:08:59.3 +24:07:21  8.4  0.74 125
PPM 097066     07:09:19.7 +23:09:16  9.5  0.24 125
PPM 097051     07:09:03.7 +23:22:37 10.3  0.05 125
04XX190        07:09:15.1 +23:23:22 11.1       124
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 0.8 sigma about the mid-time.
The median site spacing is 13.0 km RECON observability=1.0 and success probability=3.1%
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 11:23:11 -41.3 Dark Up 34.3 266.2 Up 11:08:11 - 11:38:11 7649
Kelowna 11:23:10 -41.6 Dark Up 34.4 266.3 Up 11:08:10 - 11:38:10 7617
Peachland 11:23:10 -41.8 Dark Up 34.6 266.1 Up 11:08:10 - 11:38:10 7600
Summerland 11:23:09 -41.8 Dark Up 34.6 266.3 Up 11:08:09 - 11:38:09 7592
Penticton 11:23:09 -41.7 Dark Up 34.5 266.5 Up 11:08:09 - 11:38:09 7591
Oliver 11:23:09 -41.9 Dark Up 34.5 266.7 Up 11:08:09 - 11:38:09 7565
Anarchist Mountain Observatory 11:23:07 -41.8 Dark Up 34.4 267.0 Up 11:08:07 - 11:38:07 7559
Tonasket 11:23:07 -41.9 Dark Up 34.5 267.1 Up 11:08:07 - 11:38:07 7534
Okanogan 11:23:05 -42.2 Dark Up 34.6 267.2 Up 11:08:05 - 11:38:05 7504
Brewster 11:23:05 -42.4 Dark Up 34.7 267.3 Up 11:08:05 - 11:38:05 7478
Manson/Chelan 11:23:05 -42.7 Dark Up 35.0 267.1 Up 11:08:05 - 11:38:05 7452
Entiat 11:23:04 -42.8 Dark Up 35.0 267.2 Up 11:08:04 - 11:38:04 7433
Wenatchee 11:23:03 -42.9 Dark Up 35.1 267.3 Up 11:08:03 - 11:38:03 7411
Victoria 11:23:10 -44.5 Dark Up 37.1 264.1 Up 11:08:10 - 11:38:10 7402
Ellensburg 11:23:02 -43.2 Dark Up 35.3 267.4 Up 11:08:02 - 11:38:02 7373
Pasco 11:22:57 -42.5 Dark Up 34.4 269.0 Up 11:07:57 - 11:37:57 7360
Niwot 11:22:24 -33.4 Dark Up 23.8 281.4 Low 11:07:24 - 11:37:24 7359
PNWRO 11:22:56 -42.4 Dark Up 34.2 269.3 Up 11:07:56 - 11:37:56 7349
SwRI 11:22:24 -33.5 Dark Up 23.8 281.4 Low 11:07:24 - 11:37:24 7347
Yakima 11:23:01 -43.4 Dark Up 35.3 267.7 Up 11:08:01 - 11:38:01 7341
Toppenish/White Swan 11:23:00 -43.3 Dark Up 35.2 268.0 Up 11:08:00 - 11:38:00 7330
Goldendale 11:22:59 -43.8 Dark Up 35.5 268.1 Up 11:07:59 - 11:37:59 7274
The Dalles 11:22:58 -44.1 Dark Up 35.8 267.9 Up 11:07:58 - 11:37:58 7245
Maupin 11:22:56 -44.1 Dark Up 35.8 268.3 Up 11:07:56 - 11:37:56 7216
Redmond 11:22:54 -44.5 Dark Up 35.8 268.9 Up 11:07:54 - 11:37:54 7142
Sisters 11:22:55 -44.7 Dark Up 36.1 268.6 Up 11:07:55 - 11:37:55 7131
Bend 11:22:53 -44.6 Dark Up 36.0 269.0 Up 11:07:53 - 11:37:53 7121
Oregon Observatory 11:22:53 -44.8 Dark Up 36.1 269.0 Up 11:07:53 - 11:37:53 7103
La Pine/Gilchrist 11:22:53 -44.9 Dark Up 36.1 269.1 Up 11:07:53 - 11:37:53 7084
North Lake 11:22:50 -44.6 Dark Up 35.7 269.8 Up 11:07:50 - 11:37:50 7069
Paisley 11:22:48 -44.5 Dark Up 35.4 270.5 Up 11:07:48 - 11:37:48 7036
Lakeview 11:22:47 -44.4 Dark Up 35.3 270.9 Up 11:07:47 - 11:37:47 7002
Klamath Falls 11:22:48 -45.5 Dark Up 36.3 270.0 Up 11:07:48 - 11:37:48 6957
Cedarville 11:22:44 -44.5 Dark Up 35.1 271.5 Up 11:07:44 - 11:37:44 6954
Fall River/Burney 11:22:44 -45.5 Dark Up 36.0 271.1 Up 11:07:44 - 11:37:44 6873
Susanville 11:22:41 -45.1 Dark Up 35.5 272.0 Up 11:07:41 - 11:37:41 6846
Gimple 11:22:40 -45.3 Dark Up 35.6 272.0 Up 11:07:40 - 11:37:40 6815
Greenville 11:22:41 -45.4 Dark Up 35.7 272.0 Up 11:07:41 - 11:37:41 6812
Reno 11:22:38 -44.6 Dark Up 34.8 273.1 Up 11:07:38 - 11:37:38 6802
Portola 11:22:40 -45.1 Dark Up 35.3 272.5 Up 11:07:40 - 11:37:40 6802
Quincy 11:22:41 -45.4 Dark Up 35.7 272.1 Up 11:07:41 - 11:37:41 6796
Yerington 11:22:35 -44.2 Dark Up 34.3 273.9 Up 11:07:35 - 11:37:35 6778
Carson City 11:22:37 -44.7 Dark Up 34.8 273.4 Up 11:07:37 - 11:37:37 6772
Tonopah 11:22:29 -42.9 Dark Up 32.7 275.6 Up 11:07:29 - 11:37:29 6769
Hawthorne 11:22:33 -43.9 Dark Up 33.8 274.5 Up 11:07:33 - 11:37:33 6758
Gardnerville 11:22:37 -44.7 Dark Up 34.7 273.6 Up 11:07:37 - 11:37:37 6753
Indian Springs 11:22:24 -41.9 Dark Up 31.3 277.4 Up 11:07:24 - 11:37:24 6699
Lee Vining 11:22:32 -44.4 Dark Up 34.2 274.6 Up 11:07:32 - 11:37:32 6693
Beatty 11:22:26 -42.7 Dark Up 32.2 276.6 Up 11:07:26 - 11:37:26 6687
Henderson 11:22:21 -41.4 Dark Up 30.7 278.0 Up 11:07:21 - 11:37:21 6678
Bishop 11:22:29 -43.9 Dark Up 33.6 275.4 Up 11:07:29 - 11:37:29 6667
DCO 11:22:16 -39.9 Dark Up 29.1 279.5 Low 11:07:16 - 11:37:16 6667
Patrick 11:22:18 -40.5 Dark Up 29.7 279.0 Low 11:07:18 - 11:37:18 6667
Kingman/Dolan Springs 11:22:18 -40.7 Dark Up 29.9 279.0 Low 11:07:18 - 11:37:18 6641
Searchlight/Boulder City 11:22:20 -41.4 Dark Up 30.6 278.4 Up 11:07:20 - 11:37:20 6632
Laughlin/Bullhead City 11:22:18 -41.1 Dark Up 30.3 278.7 Up 11:07:18 - 11:37:18 6619
George/Scottsdale 11:22:11 -38.9 Dark Up 27.8 280.9 Low 11:07:11 - 11:37:11 6597
Mohave Valley 11:22:17 -41.1 Dark Up 30.2 278.9 Up 11:07:17 - 11:37:17 6596
Lake Havasu City 11:22:16 -40.9 Dark Up 30.0 279.3 Low 11:07:16 - 11:37:16 6571
Parker 11:22:15 -40.9 Dark Up 29.9 279.5 Low 11:07:15 - 11:37:15 6542
Blythe 11:22:14 -41.2 Dark Up 30.0 279.6 Up 11:07:14 - 11:37:14 6485
Idyllwild 11:22:17 -42.9 Dark Up 31.8 278.5 Up 11:07:17 - 11:37:17 6416
CPSLO 11:22:27 -46.0 Dark Up 35.2 275.6 Up 11:07:27 - 11:37:27 6407
Calipatria 11:22:14 -42.0 Dark Up 30.7 279.5 Up 11:07:14 - 11:37:14 6406
Yuma 11:22:11 -41.3 Dark Up 29.9 280.1 Low 11:07:11 - 11:37:11 6402
Wildwood 11:22:20 -44.5 Dark Up 33.4 277.4 Up 11:07:20 - 11:37:20 6376

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 04XX190, (2028/01/20 11:25UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1  9.66 117
44 Gem         07:05:18.4 +22:38:15  5.9  0.95 125
PPM 097045     07:07:16.9 +24:10:06  8.4  0.74 125
PPM 097066     07:07:38.0 +23:12:02  9.5  0.24 125
PPM 097051     07:07:21.9 +23:25:22 10.3  0.05 125
04XX190        07:07:33.3 +23:26:07 11.1       125
Positions are for J2000

Event circumstances last updated at 2020/10/02 20:54:34 UT

Marc W. Buie, Southwest Research Institute

RECON