RECON: TNO occultation with 84522

Event between (84522) 02TC302 and star GA1280:00781926 with event index number of 2437504

Geocentric closest approach at 2026/11/05 07:51:38 UTC

J2000 position of star is 03:04:57.3 +38:16:57
Equinox of date position of star is 03:06:30.1 +38:22:31
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 120 degrees from the moon. Moon is 16% illuminated.
Apparent brightness V=20.2

[RECON map]
Object is 42.7 AU from the Sun and 41.7 AU from the Earth.
Apparent velocity is 25.5 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 76 seconds.
The 1-sigma cross-track error in the shadow position is 1988 km.
The sky-plane scale is 30279.0 km/arcsec.

The object has an absolute magnitude Hv=3.9
Diameter=981.8 km assuming a 5% albedo -- 38.8 sec chord
Diameter=400.8 km assuming a 30% albedo -- 15.8 sec chord
Dynamical classification is 5:2EEE
 
 
 
 
 
 

Star training set for 84522, (2026/11/05 07:53UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:27.8 +16:33:41  0.8 29.52 106
Algol          03:09:55.6 +41:03:26  2.1  2.74 119
25Rho Per      03:06:54.4 +38:56:33  3.3  0.56 120
PPM 068057     03:05:52.3 +38:10:58  6.9  0.26 121
PPM 068069     03:06:37.4 +38:14:13  9.8  0.15 121
84522          03:06:40.4 +38:23:07 16.9       120
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 5.0 sigma about the mid-time.
The median site spacing is 38.0 km RECON observability=1.0 and success probability=4.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 07:51:04 -51.5 Dark Down 74.5 211.2 Up 07:44:16 - 07:57:53 5091
Kamloops 07:51:44 -55.0 Dark Down 77.3 165.2 Up 07:44:55 - 07:58:32 5028
Kelowna 07:51:42 -55.8 Dark Down 78.2 167.6 Up 07:44:53 - 07:58:30 4930
Peachland 07:51:43 -55.9 Dark Down 78.3 166.3 Up 07:44:54 - 07:58:31 4922
Summerland 07:51:42 -56.1 Dark Down 78.4 166.5 Up 07:44:54 - 07:58:31 4905
Penticton 07:51:43 -56.1 Dark Down 78.5 166.9 Up 07:44:54 - 07:58:31 4896
Oliver 07:51:43 -56.5 Dark Down 78.8 166.5 Up 07:44:54 - 07:58:31 4858
Anarchist Mountain Observatory 07:51:42 -56.6 Dark Down 79.0 167.0 Up 07:44:54 - 07:58:31 4837
Victoria 07:51:54 -57.2 Dark Down 78.5 150.7 Up 07:45:06 - 07:58:43 4837
Okanogan 07:51:44 -57.3 Dark Down 79.6 165.3 Up 07:44:55 - 07:58:32 4770
Brewster 07:51:44 -57.6 Dark Down 79.9 164.1 Up 07:44:56 - 07:58:33 4743
Manson/Chelan 07:51:46 -57.8 Dark Down 80.0 162.2 Up 07:44:57 - 07:58:34 4725
Wenatchee 07:51:46 -58.3 Dark Down 80.4 160.5 Up 07:44:58 - 07:58:35 4676
Ellensburg 07:51:47 -58.7 Dark Down 80.7 158.7 Up 07:44:59 - 07:58:36 4634
Yakima 07:51:48 -59.1 Dark Down 81.1 157.7 Up 07:44:59 - 07:58:36 4590
Toppenish/White Swan 07:51:47 -59.3 Dark Down 81.4 157.9 Up 07:44:59 - 07:58:36 4565
PNWRO 07:51:44 -59.6 Dark Down 82.0 164.9 Up 07:44:55 - 07:58:32 4506
The Dalles 07:51:50 -60.1 Dark Down 81.8 151.8 Up 07:45:02 - 07:58:39 4491
Maupin 07:51:50 -60.5 Dark Down 82.2 150.9 Up 07:45:02 - 07:58:39 4444
Sisters 07:51:53 -61.4 Dark Down 82.8 144.8 Up 07:45:04 - 07:58:41 4355
Bend 07:51:52 -61.6 Dark Down 83.1 145.1 Up 07:45:03 - 07:58:40 4325
Oregon Observatory 07:51:52 -61.8 Dark Down 83.2 143.5 Up 07:45:04 - 07:58:41 4308
Chiloquin 07:51:55 -63.1 Dark Down 84.0 133.5 Up 07:45:06 - 07:58:43 4171
Klamath Falls 07:51:55 -63.5 Dark Down 84.3 131.5 Up 07:45:06 - 07:58:43 4132
Cedarville 07:51:50 -64.1 Dark Down 85.6 136.2 Up 07:45:02 - 07:58:39 4034
Fall River/Burney 07:51:54 -64.7 Dark Down 85.2 123.5 Up 07:45:06 - 07:58:43 3998
Greenville 07:51:54 -65.6 Dark Down 85.9 115.8 Up 07:45:05 - 07:58:42 3893
Gimple 07:51:53 -65.6 Dark Down 86.0 116.2 Up 07:45:05 - 07:58:42 3891
Quincy 07:51:54 -65.8 Dark Down 86.0 113.2 Up 07:45:06 - 07:58:43 3870
Portola 07:51:52 -65.9 Dark Down 86.4 113.9 Up 07:45:04 - 07:58:41 3850
Reno 07:51:50 -66.1 Dark Down 87.0 113.5 Up 07:45:02 - 07:58:39 3812
Dunrhomin 07:51:02 -61.5 Dark Down 81.3 260.4 Up 07:44:13 - 07:57:50 3788
Carson City 07:51:51 -66.4 Dark Down 87.1 107.2 Up 07:45:02 - 07:58:39 3772
Nikitin 07:51:02 -61.6 Dark Down 81.4 261.5 Up 07:44:13 - 07:57:50 3768
CU-SBO 07:51:02 -61.7 Dark Down 81.4 261.9 Up 07:44:13 - 07:57:50 3760
Gardnerville 07:51:51 -66.7 Dark Down 87.2 102.6 Up 07:45:02 - 07:58:39 3745
Yerington 07:51:48 -66.6 Dark Down 87.6 106.6 Up 07:45:00 - 07:58:37 3742
Hawthorne 07:51:47 -67.0 Dark Down 88.1 96.8 Up 07:44:59 - 07:58:36 3684
Lee Vining 07:51:49 -67.6 Dark Down 87.7 80.9 Up 07:45:00 - 07:58:37 3629
Bishop 07:51:47 -68.1 Dark Down 88.1 60.6 Up 07:44:59 - 07:58:36 3554
Beatty 07:51:42 -68.3 Dark Down 88.6 16.1 Up 07:44:54 - 07:58:31 3483
Patrick 07:51:33 -69.0 Dark Down 86.6 327.5 Up 07:44:44 - 07:58:21 3290
Laughlin/Bullhead City 07:51:35 -69.4 Dark Down 86.6 337.5 Up 07:44:46 - 07:58:23 3270
Wildwood 07:51:50 -71.4 Dark Down 85.4 23.4 Up 07:45:02 - 07:58:39 3198
Lake Havasu City 07:51:34 -70.0 Dark Down 85.9 338.6 Up 07:44:46 - 07:58:23 3193
Idyllwild 07:51:43 -71.3 Dark Down 85.4 4.5 Up 07:44:55 - 07:58:32 3134
George/Scottsdale 07:51:26 -69.8 Dark Down 84.2 323.8 Up 07:44:37 - 07:58:14 3087
Calipatria 07:51:39 -71.6 Dark Down 84.8 353.8 Up 07:44:51 - 07:58:28 3055
Yuma 07:51:36 -71.8 Dark Down 84.3 347.4 Up 07:44:48 - 07:58:25 2998

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 84522, (2026/11/05 07:53UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 29.52 106
Algol          03:08:10.1 +40:57:20  2.1  2.74 119
25Rho Per      03:05:10.8 +38:50:23  3.3  0.56 120
PPM 068057     03:04:09.4 +38:04:45  6.9  0.26 121
PPM 068069     03:04:54.4 +38:08:03  9.8  0.15 121
84522          03:04:57.3 +38:16:57 16.9       120
Positions are for J2000

Event circumstances last updated at 2024/03/05 04:51:56 UT

Marc W. Buie, Southwest Research Institute

RECON