RECON: TNO occultation with 13NT33

Event between 13NT33 and star GA1160:00768315 with event index number of 2070013

Geocentric closest approach at 2028/01/31 02:32:50 UTC

J2000 position of star is 04:23:18.2 +27:01:40
Equinox of date position of star is 04:24:46.7 +27:04:55
Stellar brightness G=14.3, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 69 degrees from the moon. Moon is 17% illuminated.
Apparent brightness V=21.1

[RECON map]
Object is 16.4 AU from the Sun and 15.9 AU from the Earth.
Apparent velocity is 6.2 km/sec on the sky relative to the star, or, 1.9 arcsec/hr.
The 1-sigma error in the time of the event is 194 seconds.
The 1-sigma cross-track error in the shadow position is 848 km.
The sky-plane scale is 11549.6 km/arcsec.

The object has an absolute magnitude Hv=8.7
Diameter=101.9 km assuming a 5% albedo -- 17.7 sec chord
Diameter=41.6 km assuming a 30% albedo -- 7.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 13NT33, (2028/01/31 02:21UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:32.1 +16:33:49  0.8 10.92  71
44Zet Per      03:55:54.3 +31:57:53  2.8  7.99  64
44 Tau         04:12:32.8 +26:33:07  5.4  2.84  66
PPM 093537     04:30:02.5 +27:50:28  8.1  1.34  70
PPM 093441     04:22:59.3 +27:24:53  9.2  0.56  69
PPM 093468     04:24:51.9 +27:17:38 10.2  0.21  69
13NT33         04:25:02.1 +27:05:29 14.3        70
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 4.6 sigma about the mid-time.
The median site spacing is 35.1 km RECON observability=0.9 and success probability=16.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 02:35:44 -16.8 AT Up 62.9 144.2 Up 02:20:44 - 02:50:44 2813
Sleaford 02:33:05 -25.4 Dark Up 64.8 172.4 Up 02:18:05 - 02:48:05 2802
Kelowna 02:35:38 -17.2 AT Up 63.9 144.9 Up 02:20:38 - 02:50:38 2721
Peachland 02:35:42 -17.0 AT Up 63.9 144.2 Up 02:20:42 - 02:50:42 2714
Summerland 02:35:42 -17.1 AT Up 64.0 144.2 Up 02:20:42 - 02:50:42 2698
Penticton 02:35:40 -17.1 AT Up 64.1 144.3 Up 02:20:40 - 02:50:40 2689
Oliver 02:35:43 -17.1 AT Up 64.4 143.9 Up 02:20:43 - 02:50:43 2654
Victoria 02:36:27 -14.6 AT Up 63.4 136.5 Up 02:21:27 - 02:51:27 2647
Anarchist Mountain Observatory 02:35:42 -17.2 AT Up 64.6 144.1 Up 02:20:42 - 02:50:42 2635
Okanogan 02:35:47 -17.0 AT Up 65.1 142.9 Up 02:20:47 - 02:50:47 2573
Brewster 02:35:51 -16.8 AT Up 65.2 142.1 Up 02:20:51 - 02:50:51 2549
Manson/Chelan 02:35:55 -16.6 AT Up 65.2 141.2 Up 02:20:55 - 02:50:55 2533
Wenatchee 02:35:59 -16.4 AT Up 65.5 140.3 Up 02:20:59 - 02:50:59 2488
Ellensburg 02:36:04 -16.2 AT Up 65.8 139.3 Up 02:21:04 - 02:51:04 2450
Yakima 02:36:06 -16.1 AT Up 66.1 138.7 Up 02:21:06 - 02:51:06 2409
Toppenish/White Swan 02:36:05 -16.2 AT Up 66.3 138.7 Up 02:21:05 - 02:51:05 2384
PNWRO 02:35:50 -17.1 AT Up 67.2 140.9 Up 02:20:50 - 02:50:50 2324
The Dalles 02:36:18 -15.6 AT Up 66.5 136.1 Up 02:21:18 - 02:51:18 2318
Maupin 02:36:18 -15.6 AT Up 66.9 135.6 Up 02:21:18 - 02:51:18 2273
Sisters 02:36:29 -15.1 AT Up 67.3 133.3 Up 02:21:29 - 02:51:29 2191
Bend 02:36:28 -15.3 AT Up 67.6 133.3 Up 02:21:28 - 02:51:28 2163
Oregon Observatory 02:36:29 -15.1 AT Up 67.6 132.8 Up 02:21:29 - 02:51:29 2147
Chiloquin 02:36:41 -14.6 AT Up 68.3 129.7 Up 02:21:41 - 02:51:41 2018
Klamath Falls 02:36:41 -14.6 AT Up 68.5 129.1 Up 02:21:41 - 02:51:41 1981
Cedarville 02:36:25 -15.6 AT Up 69.9 130.7 Up 02:21:25 - 02:51:25 1882
Fall River/Burney 02:36:42 -14.7 AT Up 69.5 127.5 Up 02:21:42 - 02:51:42 1852
Greenville 02:36:40 -14.9 AT Up 70.3 126.3 Up 02:21:40 - 02:51:40 1750
Gimple 02:36:39 -14.9 AT Up 70.4 126.5 Up 02:21:39 - 02:51:39 1748
Quincy 02:36:42 -14.8 AT Up 70.4 125.9 Up 02:21:42 - 02:51:42 1728
Portola 02:36:36 -15.2 AT Up 70.8 126.5 Up 02:21:36 - 02:51:36 1707
Reno 02:36:29 -15.6 AT Up 71.3 127.1 Up 02:21:29 - 02:51:29 1668
Carson City 02:36:30 -15.5 AT Up 71.6 126.3 Up 02:21:30 - 02:51:30 1630
Gardnerville 02:36:30 -15.5 AT Up 71.7 125.8 Up 02:21:30 - 02:51:30 1603
Yerington 02:36:23 -16.0 AT Up 72.1 127.0 Up 02:21:23 - 02:51:23 1599
Dunrhomin 02:33:19 -26.2 Dark Up 76.6 169.2 Up 02:18:19 - 02:48:19 1564
Nikitin 02:33:19 -26.2 Dark Up 76.8 169.0 Up 02:18:19 - 02:48:19 1544
Hawthorne 02:36:19 -16.3 AT Up 72.7 126.9 Up 02:21:19 - 02:51:19 1541
CU-SBO 02:33:20 -26.1 Dark Up 76.8 168.6 Up 02:18:20 - 02:48:20 1538
Lee Vining 02:36:28 -15.8 AT Up 72.7 124.5 Up 02:21:28 - 02:51:28 1489
Bishop 02:36:20 -16.3 AT Up 73.5 124.3 Up 02:21:20 - 02:51:20 1413
Beatty 02:36:00 -17.4 AT Up 74.8 126.5 Up 02:21:00 - 02:51:00 1338
Patrick 02:35:26 -19.4 Dark Up 77.4 128.8 Up 02:20:26 - 02:50:26 1135
Laughlin/Bullhead City 02:35:36 -18.8 Dark Up 77.2 126.1 Up 02:20:36 - 02:50:36 1119
Wildwood 02:36:35 -15.6 AT Up 75.0 113.9 Up 02:21:35 - 02:51:35 1066
Lake Havasu City 02:35:35 -18.9 Dark Up 77.7 124.3 Up 02:20:35 - 02:50:35 1042
Idyllwild 02:36:11 -17.0 AT Up 76.5 116.1 Up 02:21:11 - 02:51:11 996
George/Scottsdale 02:35:03 -20.7 Dark Up 79.7 128.2 Up 02:20:03 - 02:50:03 924
Calipatria 02:35:56 -17.8 AT Up 77.6 116.1 Up 02:20:56 - 02:50:56 911
Yuma 02:35:45 -18.4 Dark Up 78.4 116.3 Up 02:20:45 - 02:50:45 851

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 13NT33, (2028/01/31 02:21UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 10.92  71
44Zet Per      03:54:07.9 +31:53:01  2.8  7.99  64
44 Tau         04:10:49.8 +26:28:51  5.4  2.84  66
PPM 093537     04:28:17.9 +27:46:51  8.1  1.34  70
PPM 093441     04:21:15.3 +27:21:00  9.2  0.56  69
PPM 093468     04:23:07.9 +27:13:49 10.2  0.21  69
13NT33         04:23:18.2 +27:01:40 14.3        69
Positions are for J2000

Event circumstances last updated at 2023/11/29 04:20:31 UT

Marc W. Buie, Southwest Research Institute

RECON