RECON: TNO occultation with 03TJ58

Event between 03TJ58 and star GA1120:02438734 with event index number of 1694787

Geocentric closest approach at 2025/02/09 07:40:49 UTC

J2000 position of star is 06:46:35.6 +23:53:10
Equinox of date position of star is 06:47:49.5 +23:51:47
Stellar brightness G=14.9, use SENSEUP=128
Star is 4 degrees from the moon. Moon is 89% illuminated.
TNO apparent brightness V=26.3

[RECON map]
TNO is 41.9 AU from the Sun and 41.1 AU from the Earth.
The TNO is moving 18.6 km/sec on the sky relative to the star, or, 2.2 arcsec/hr.
The 1-sigma error in the time of the event is 551 seconds.
The 1-sigma cross-track error in the shadow position is 2466 km.
The sky-plane scale is 29812.4 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=182.0 km assuming a 5% albedo -- 3.2 sec chord
Diameter=74.3 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 03TJ58, (2025/02/09 07:41UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:51.2 +27:57:49  1.1 13.82  12
Alhena         06:39:09.7 +16:22:33  1.9  7.77  12
PPM 096264     06:38:59.6 +24:34:04  6.5  2.20   5
PPM 096508     06:47:41.7 +23:20:35  7.4  0.52   5
PPM 096503     06:47:12.3 +23:49:33  9.5  0.21   4
PPM 096511     06:47:50.6 +23:44:38 10.7  0.13   4
03TJ58         06:48:07.3 +23:51:27 14.9         4
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 1.6 sigma about the mid-time.
The median site spacing is 20.2 km RECON observability=1.0 and success probability=16.8%
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 07:39:01 -53.7 Dark Up 53.0 237.0 Up 07:24:01 - 07:54:01 -558
Kelowna 07:39:01 -54.1 Dark Up 53.3 237.2 Up 07:24:01 - 07:54:01 -596
Peachland 07:39:01 -54.1 Dark Up 53.6 237.0 Up 07:24:01 - 07:54:01 -612
Summerland 07:39:00 -54.3 Dark Up 53.6 237.3 Up 07:24:00 - 07:54:00 -624
Penticton 07:39:00 -54.4 Dark Up 53.6 237.5 Up 07:24:00 - 07:54:00 -628
Oliver 07:38:59 -54.7 Dark Up 53.8 237.9 Up 07:23:59 - 07:53:59 -660
Anarchist Mountain Observatory 07:38:58 -54.9 Dark Up 53.7 238.3 Up 07:23:58 - 07:53:58 -672
Tonasket 07:38:57 -55.2 Dark Up 54.0 238.6 Up 07:23:57 - 07:53:57 -702
Okanogan 07:38:57 -55.5 Dark Up 54.2 238.8 Up 07:23:57 - 07:53:57 -736
Brewster 07:38:57 -55.7 Dark Up 54.5 238.9 Up 07:23:57 - 07:53:57 -766
Manson/Chelan 07:38:58 -55.9 Dark Up 54.8 238.7 Up 07:23:58 - 07:53:58 -793
Victoria 07:39:10 -54.6 Dark Up 56.2 233.8 Up 07:24:10 - 07:54:10 -796
Entiat 07:38:57 -56.1 Dark Up 54.9 238.8 Up 07:23:57 - 07:53:57 -815
Wenatchee 07:38:57 -56.3 Dark Up 55.1 239.0 Up 07:23:57 - 07:53:57 -841
Ellensburg 07:38:56 -56.6 Dark Up 55.5 239.3 Up 07:23:56 - 07:53:56 -884
Yakima 07:38:55 -57.0 Dark Up 55.7 239.7 Up 07:23:55 - 07:53:55 -923
Pasco 07:38:50 -57.6 Dark Up 55.0 241.9 Up 07:23:50 - 07:53:50 -925
Toppenish/White Swan 07:38:54 -57.3 Dark Up 55.7 240.2 Up 07:23:54 - 07:53:54 -940
PNWRO 07:38:48 -57.9 Dark Up 55.0 242.5 Up 07:23:48 - 07:53:48 -943
Goldendale 07:38:54 -57.7 Dark Up 56.2 240.4 Up 07:23:54 - 07:53:54 -1001
The Dalles 07:38:55 -57.8 Dark Up 56.6 240.3 Up 07:23:55 - 07:53:55 -1030
Maupin 07:38:54 -58.3 Dark Up 56.7 240.9 Up 07:23:54 - 07:53:54 -1068
Niwot 07:37:47 -64.0 Dark Up 47.3 262.4 Up 07:22:47 - 07:52:47 -1153
Redmond 07:38:52 -59.1 Dark Up 57.2 242.0 Up 07:23:52 - 07:53:52 -1157
Sisters 07:38:53 -59.0 Dark Up 57.4 241.5 Up 07:23:53 - 07:53:53 -1163
SwRI 07:37:47 -64.1 Dark Up 47.4 262.4 Up 07:22:47 - 07:52:47 -1166
Bend 07:38:52 -59.3 Dark Up 57.4 242.2 Up 07:23:52 - 07:53:52 -1181
Oregon Observatory 07:38:51 -59.4 Dark Up 57.6 242.2 Up 07:23:51 - 07:53:51 -1200
La Pine/Gilchrist 07:38:52 -59.6 Dark Up 57.7 242.4 Up 07:23:52 - 07:53:52 -1221
North Lake 07:38:49 -60.1 Dark Up 57.5 243.8 Up 07:23:49 - 07:53:49 -1251
Paisley 07:38:45 -60.7 Dark Up 57.5 245.0 Up 07:23:45 - 07:53:45 -1297
Lakeview 07:38:44 -61.3 Dark Up 57.6 245.9 Up 07:23:44 - 07:53:44 -1342
Klamath Falls 07:38:49 -60.9 Dark Up 58.5 244.2 Up 07:23:49 - 07:53:49 -1370
Cedarville 07:38:42 -61.9 Dark Up 57.8 247.0 Up 07:23:42 - 07:53:42 -1403
Fall River/Burney 07:38:45 -62.1 Dark Up 58.8 246.4 Up 07:23:45 - 07:53:45 -1478
Susanville 07:38:40 -62.8 Dark Up 58.5 248.2 Up 07:23:40 - 07:53:40 -1524
Gimple 07:38:40 -63.0 Dark Up 58.8 248.3 Up 07:23:40 - 07:53:40 -1557
Greenville 07:38:41 -63.0 Dark Up 58.8 248.3 Up 07:23:41 - 07:53:41 -1559
Quincy 07:38:41 -63.2 Dark Up 58.9 248.6 Up 07:23:41 - 07:53:41 -1579
Portola 07:38:38 -63.5 Dark Up 58.6 249.3 Up 07:23:38 - 07:53:38 -1580
Reno 07:38:35 -63.9 Dark Up 58.2 250.4 Up 07:23:35 - 07:53:35 -1592
Carson City 07:38:35 -64.2 Dark Up 58.3 250.9 Up 07:23:35 - 07:53:35 -1627
Yerington 07:38:32 -64.6 Dark Up 57.9 251.9 Up 07:23:32 - 07:53:32 -1632
Gardnerville 07:38:34 -64.5 Dark Up 58.4 251.4 Up 07:23:34 - 07:53:34 -1651
Hawthorne 07:38:29 -65.1 Dark Up 57.7 253.1 Up 07:23:29 - 07:53:29 -1666
Tonopah 07:38:22 -65.9 Dark Up 56.8 255.1 Up 07:23:22 - 07:53:22 -1677
Lee Vining 07:38:29 -65.5 Dark Up 58.2 253.5 Up 07:23:29 - 07:53:29 -1734
Bishop 07:38:25 -66.3 Dark Up 57.9 255.1 Up 07:23:25 - 07:53:25 -1777
Beatty 07:38:18 -67.1 Dark Up 56.7 257.2 Up 07:23:18 - 07:53:18 -1782
Indian Springs 07:38:13 -67.6 Dark Up 56.0 258.6 Up 07:23:13 - 07:53:13 -1787
Henderson 07:38:09 -68.2 Dark Up 55.5 259.9 Up 07:23:09 - 07:53:09 -1823
Patrick 07:38:03 -69.0 Dark Up 54.7 261.7 Up 07:23:03 - 07:53:03 -1856
DCO 07:38:00 -69.4 Dark Up 54.2 262.6 Up 07:23:00 - 07:53:00 -1867
Searchlight/Boulder City 07:38:08 -68.8 Dark Up 55.6 260.8 Up 07:23:08 - 07:53:08 -1879
Kingman/Dolan Springs 07:38:03 -69.2 Dark Up 54.9 261.8 Up 07:23:03 - 07:53:03 -1883
Laughlin/Bullhead City 07:38:05 -69.1 Dark Up 55.3 261.5 Up 07:23:05 - 07:53:05 -1900
Mohave Valley 07:38:05 -69.4 Dark Up 55.4 261.9 Up 07:23:05 - 07:53:05 -1927
Lake Havasu City 07:38:03 -69.8 Dark Up 55.2 262.6 Up 07:23:03 - 07:53:03 -1961
George/Scottsdale 07:37:51 -70.8 Dark Up 53.3 265.3 Up 07:22:51 - 07:52:51 -1970
Parker 07:38:02 -70.2 Dark Up 55.3 263.1 Up 07:23:02 - 07:53:02 -1995
CPSLO 07:38:29 -67.5 Dark Up 60.1 256.3 Up 07:23:29 - 07:53:29 -2042
Blythe 07:38:02 -70.7 Dark Up 55.6 263.7 Up 07:23:02 - 07:53:02 -2057
Idyllwild 07:38:10 -70.1 Dark Up 57.3 262.0 Up 07:23:10 - 07:53:10 -2102
Wildwood 07:38:18 -69.3 Dark Up 58.7 260.0 Up 07:23:18 - 07:53:18 -2114
Calipatria 07:38:04 -71.0 Dark Up 56.4 263.8 Up 07:23:04 - 07:53:04 -2133
Yuma 07:38:00 -71.6 Dark Up 55.7 265.0 Up 07:23:00 - 07:53:00 -2152

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 03TJ58, (2025/02/09 07:41UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 13.82  12
Alhena         06:37:42.8 +16:23:57  1.9  7.77  12
PPM 096264     06:37:27.2 +24:35:27  6.5  2.20   5
PPM 096508     06:46:10.3 +23:22:18  7.4  0.52   5
PPM 096503     06:45:40.6 +23:51:14  9.5  0.21   4
PPM 096511     06:46:18.9 +23:46:20 10.7  0.13   4
03TJ58         06:46:35.6 +23:53:10 14.9         4
Positions are for J2000

Event circumstances last updated at 2020/03/26 21:02:30 UT

Marc W. Buie, Southwest Research Institute

RECON