RECON: TNO occultation with 03UN284

Event between 03UN284 and star GA1140:01145662 with event index number of 1357702

Geocentric closest approach at 2024/12/25 03:28:04 UTC

J2000 position of star is 05:21:31.2 +25:23:37
Equinox of date position of star is 05:22:46.0 +25:24:43
Stellar brightness G=15.6, use SENSEUP=128
Star is 126 degrees from the moon. Moon is 30% illuminated.
TNO apparent brightness V=26.3

[RECON map]
TNO is 42.5 AU from the Sun and 41.6 AU from the Earth.
The TNO is moving 25.0 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 599 seconds.
The 1-sigma cross-track error in the shadow position is 2216 km.
The sky-plane scale is 30148.9 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=197.7 km assuming a 5% albedo -- 2.4 sec chord
Diameter=80.7 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 03UN284, (2024/12/25 03:28UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:21.4 +16:33:28  0.8 13.85 137
Alnath         05:27:52.4 +28:37:35  1.6  3.38 125
PPM 094294     05:22:33.6 +27:58:48  6.3  2.57 126
PPM 094241     05:19:03.2 +24:02:04  7.9  1.65 127
PPM 094280     05:21:50.3 +25:11:40  8.6  0.35 127
PPM 094307     05:23:44.2 +25:34:19 11.8  0.22 126
03UN284        05:23:03.6 +25:24:59 15.6       126
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 19.4 km RECON observability=1.0 and success probability=21.7%
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 03:30:06 -32.4 Dark Down 42.6 101.3 Up 03:15:06 - 03:45:06 456
Victoria 03:30:17 -29.8 Dark Down 40.3 96.3 Up 03:15:17 - 03:45:17 430
Kelowna 03:30:07 -32.3 Dark Down 42.6 100.8 Up 03:15:07 - 03:45:07 428
Peachland 03:30:08 -32.2 Dark Down 42.4 100.4 Up 03:15:08 - 03:45:08 427
Summerland 03:30:08 -32.2 Dark Down 42.5 100.4 Up 03:15:08 - 03:45:08 412
Penticton 03:30:08 -32.3 Dark Down 42.6 100.4 Up 03:15:08 - 03:45:08 404
Oliver 03:30:10 -32.3 Dark Down 42.7 100.1 Up 03:15:10 - 03:45:10 375
Anarchist Mountain Observatory 03:30:10 -32.4 Dark Down 42.8 100.1 Up 03:15:10 - 03:45:10 355
Tonasket 03:30:11 -32.4 Dark Down 42.8 99.8 Up 03:15:11 - 03:45:11 331
Okanogan 03:30:12 -32.3 Dark Down 42.8 99.3 Up 03:15:12 - 03:45:12 308
Brewster 03:30:13 -32.2 Dark Down 42.7 98.9 Up 03:15:13 - 03:45:13 291
Manson/Chelan 03:30:14 -31.9 Dark Down 42.5 98.4 Up 03:15:14 - 03:45:14 284
Entiat 03:30:15 -31.9 Dark Down 42.5 98.2 Up 03:15:15 - 03:45:15 267
Wenatchee 03:30:16 -31.8 Dark Down 42.5 97.8 Up 03:15:16 - 03:45:16 249
Ellensburg 03:30:17 -31.7 Dark Down 42.4 97.3 Up 03:15:17 - 03:45:17 220
Yakima 03:30:19 -31.6 Dark Down 42.4 96.9 Up 03:15:19 - 03:45:19 187
Toppenish/White Swan 03:30:19 -31.7 Dark Down 42.6 96.9 Up 03:15:19 - 03:45:19 163
Goldendale 03:30:21 -31.4 Dark Down 42.3 96.0 Up 03:15:21 - 03:45:21 129
The Dalles 03:30:22 -31.2 Dark Down 42.1 95.5 Up 03:15:22 - 03:45:22 120
Pasco 03:30:17 -32.6 Dark Down 43.4 97.8 Up 03:15:17 - 03:45:17 115
PNWRO 03:30:17 -32.8 Dark Down 43.6 97.7 Up 03:15:17 - 03:45:17 87
Maupin 03:30:23 -31.2 Dark Down 42.2 95.3 Up 03:15:23 - 03:45:23 81
Sisters 03:30:27 -30.8 Dark Down 42.0 94.1 Up 03:15:27 - 03:45:27 21
Redmond 03:30:26 -31.1 Dark Down 42.2 94.4 Up 03:15:26 - 03:45:26 6
Bend 03:30:27 -31.0 Dark Down 42.2 94.1 Up 03:15:27 - 03:45:27 -8
Oregon Observatory 03:30:28 -30.9 Dark Down 42.1 93.8 Up 03:15:28 - 03:45:28 -19
La Pine/Gilchrist 03:30:28 -30.9 Dark Down 42.0 93.6 Up 03:15:28 - 03:45:28 -35
North Lake 03:30:28 -31.3 Dark Down 42.5 93.6 Up 03:15:28 - 03:45:28 -92
Paisley 03:30:29 -31.5 Dark Down 42.8 93.4 Up 03:15:29 - 03:45:29 -152
Klamath Falls 03:30:33 -30.6 Dark Down 41.9 92.1 Up 03:15:33 - 03:45:33 -154
Lakeview 03:30:30 -31.6 Dark Down 43.0 93.1 Up 03:15:30 - 03:45:30 -203
Cedarville 03:30:32 -31.7 Dark Down 43.2 92.6 Up 03:15:32 - 03:45:32 -267
Fall River/Burney 03:30:35 -30.7 Dark Down 42.3 91.3 Up 03:15:35 - 03:45:35 -271
Susanville 03:30:35 -31.2 Dark Down 42.8 91.2 Up 03:15:35 - 03:45:35 -352
Greenville 03:30:37 -31.0 Dark Down 42.6 90.8 Up 03:15:37 - 03:45:37 -367
Gimple 03:30:36 -31.1 Dark Down 42.7 90.8 Up 03:15:36 - 03:45:36 -370
Quincy 03:30:37 -31.0 Dark Down 42.6 90.6 Up 03:15:37 - 03:45:37 -386
Portola 03:30:37 -31.3 Dark Down 43.0 90.8 Up 03:15:37 - 03:45:37 -413
Reno 03:30:36 -31.8 Dark Down 43.5 91.0 Up 03:15:36 - 03:45:36 -458
Carson City 03:30:37 -31.8 Dark Down 43.5 90.6 Up 03:15:37 - 03:45:37 -492
Gardnerville 03:30:37 -31.8 Dark Down 43.6 90.4 Up 03:15:37 - 03:45:37 -516
Yerington 03:30:36 -32.3 Dark Down 44.0 90.9 Up 03:15:36 - 03:45:36 -531
Hawthorne 03:30:36 -32.6 Dark Down 44.4 90.7 Up 03:15:36 - 03:45:36 -592
Lee Vining 03:30:38 -32.2 Dark Down 44.1 89.9 Up 03:15:38 - 03:45:38 -628
Tonopah 03:30:34 -33.7 Dark Down 45.6 91.2 Up 03:15:34 - 03:45:34 -682
Bishop 03:30:38 -32.7 Dark Down 44.6 89.8 Up 03:15:38 - 03:45:38 -708
Beatty 03:30:36 -34.0 Dark Down 45.9 90.3 Up 03:15:36 - 03:45:36 -806
CPSLO 03:30:48 -30.7 Dark Down 42.8 86.5 Up 03:15:48 - 03:45:48 -825
Niwot 03:30:02 -42.9 Dark Down 54.5 102.4 Up 03:15:02 - 03:45:02 -847
SwRI 03:30:02 -42.9 Dark Down 54.4 102.2 Up 03:15:02 - 03:45:02 -855
Indian Springs 03:30:34 -34.8 Dark Down 46.8 90.6 Up 03:15:34 - 03:45:34 -873
Henderson 03:30:34 -35.3 Dark Down 47.4 90.4 Up 03:15:34 - 03:45:34 -947
Searchlight/Boulder City 03:30:35 -35.3 Dark Down 47.4 89.8 Up 03:15:35 - 03:45:35 -1004
Wildwood 03:30:46 -32.2 Dark Down 44.4 86.4 Up 03:15:46 - 03:45:46 -1012
Patrick 03:30:33 -36.1 Dark Down 48.3 90.4 Up 03:15:33 - 03:45:33 -1044
Laughlin/Bullhead City 03:30:35 -35.5 Dark Down 47.7 89.7 Up 03:15:35 - 03:45:35 -1045
Kingman/Dolan Springs 03:30:34 -36.0 Dark Down 48.1 90.0 Up 03:15:34 - 03:45:34 -1060
Mohave Valley 03:30:36 -35.5 Dark Down 47.7 89.4 Up 03:15:36 - 03:45:36 -1072
DCO 03:30:32 -36.7 Dark Down 48.8 90.4 Up 03:15:32 - 03:45:32 -1097
Idyllwild 03:30:43 -33.7 Dark Down 45.9 87.0 Up 03:15:43 - 03:45:43 -1111
Lake Havasu City 03:30:36 -35.7 Dark Down 47.9 89.1 Up 03:15:36 - 03:45:36 -1119
Parker 03:30:37 -35.7 Dark Down 47.9 88.7 Up 03:15:37 - 03:45:37 -1154
Blythe 03:30:38 -35.4 Dark Down 47.7 88.0 Up 03:15:38 - 03:45:38 -1195
Calipatria 03:30:41 -34.6 Dark Down 46.9 87.0 Up 03:15:41 - 03:45:41 -1212
George/Scottsdale 03:30:31 -37.6 Dark Down 49.9 89.6 Up 03:15:31 - 03:45:31 -1276
Yuma 03:30:40 -35.3 Dark Down 47.6 87.0 Up 03:15:40 - 03:45:40 -1285

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 03UN284, (2024/12/25 03:28UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 13.85 137
Alnath         05:26:17.5 +28:36:23  1.6  3.38 125
PPM 094294     05:20:59.3 +27:57:25  6.3  2.57 126
PPM 094241     05:17:31.7 +24:00:34  7.9  1.65 127
PPM 094280     05:20:18.0 +25:10:16  8.6  0.35 127
PPM 094307     05:22:11.6 +25:32:58 11.8  0.22 126
03UN284        05:21:31.2 +25:23:37 15.6       126
Positions are for J2000

Event circumstances last updated at 2020/03/25 21:37:47 UT

Marc W. Buie, Southwest Research Institute

RECON