RECON: TNO occultation with 03QX111

Event between 03QX111 and star GA0900:00119667 with event index number of 1548987

Geocentric closest approach at 2021/10/22 08:33:31 UTC

J2000 position of star is 01:24:23.8 +01:41:01
Equinox of date position of star is 01:25:23.8 +01:47:04
Stellar brightness G=15.8, use SENSEUP=128
Star is 29 degrees from the moon. Moon is 97% illuminated.
TNO apparent brightness V=23.2

[RECON map]
TNO is 41.6 AU from the Sun and 40.6 AU from the Earth.
The TNO is moving 25.1 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 184 seconds.
The 1-sigma cross-track error in the shadow position is 2159 km.
The sky-plane scale is 29456.3 km/arcsec.

The TNO has an absolute magnitude Hv=7.0
Diameter=244.4 km assuming a 5% albedo -- 9.7 sec chord
Diameter=99.8 km assuming a 30% albedo -- 4.0 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 03QX111, (2021/10/22 08:34UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:51.0 -29:30:22  1.2 46.98  75
68Omi Cet      02:20:27.0 -02:52:46  2.0 14.50  22
PPM 144619     01:28:01.4 +03:38:52  6.5  1.95  27
PPM 144592     01:26:27.6 +01:34:24  8.0  0.32  29
PPM 144547     01:24:44.6 +02:00:54  9.8  0.29  29
PPM 144543     01:24:33.9 +01:51:48 10.6  0.25  29
03QX111        01:25:31.2 +01:47:48 15.8        28
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 4.9 sigma about the mid-time.
The median site spacing is 18.5 km RECON observability=1.0 and success probability=11.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 08:31:33 -49.9 Dark Up 39.3 204.1 Up 08:16:33 - 08:46:33 -2576
Summerland 08:31:34 -50.3 Dark Up 39.6 203.8 Up 08:16:34 - 08:46:34 -2592
Penticton 08:31:34 -50.3 Dark Up 39.7 204.0 Up 08:16:34 - 08:46:34 -2600
Okanagan Falls 08:31:34 -50.5 Dark Up 39.9 204.0 Up 08:16:34 - 08:46:34 -2615
Oliver 08:31:34 -50.7 Dark Up 40.0 204.1 Up 08:16:34 - 08:46:34 -2628
Anarchist Mountain Observatory 08:31:33 -50.8 Dark Up 40.1 204.4 Up 08:16:33 - 08:46:33 -2647
Oroville 08:31:33 -50.9 Dark Up 40.2 204.3 Up 08:16:33 - 08:46:33 -2651
Tonasket 08:31:33 -51.1 Dark Up 40.4 204.4 Up 08:16:33 - 08:46:33 -2670
Okanogan 08:31:34 -51.4 Dark Up 40.8 204.3 Up 08:16:34 - 08:46:34 -2693
Brewster 08:31:34 -51.7 Dark Up 41.1 204.2 Up 08:16:34 - 08:46:34 -2709
Manson/Chelan 08:31:35 -52.0 Dark Up 41.3 203.8 Up 08:16:35 - 08:46:35 -2717
Entiat 08:31:36 -52.2 Dark Up 41.6 203.8 Up 08:16:36 - 08:46:36 -2733
Wenatchee 08:31:36 -52.5 Dark Up 41.8 203.8 Up 08:16:36 - 08:46:36 -2751
Ellensburg 08:31:37 -52.9 Dark Up 42.3 203.6 Up 08:16:37 - 08:46:37 -2779
Yakima 08:31:37 -53.3 Dark Up 42.6 203.7 Up 08:16:37 - 08:46:37 -2812
Toppenish/White Swan 08:31:37 -53.5 Dark Up 42.8 204.0 Up 08:16:37 - 08:46:37 -2834
Goldendale 08:31:38 -54.1 Dark Up 43.4 203.7 Up 08:16:38 - 08:46:38 -2868
The Dalles 08:31:39 -54.4 Dark Up 43.7 203.3 Up 08:16:39 - 08:46:39 -2877
Pasco 08:31:33 -53.3 Dark Up 42.5 205.7 Up 08:16:33 - 08:46:33 -2877
George/Umatilla 08:31:34 -53.7 Dark Up 42.9 205.6 Up 08:16:34 - 08:46:34 -2899
PNWRO 08:31:32 -53.5 Dark Up 42.7 206.1 Up 08:16:32 - 08:46:32 -2904
Maupin 08:31:39 -54.8 Dark Up 44.1 203.6 Up 08:16:39 - 08:46:39 -2914
Madras/Culver 08:31:39 -55.3 Dark Up 44.6 203.8 Up 08:16:39 - 08:46:39 -2959
Sisters 08:31:40 -55.7 Dark Up 45.0 203.3 Up 08:16:40 - 08:46:40 -2975
Redmond 08:31:39 -55.7 Dark Up 44.9 203.8 Up 08:16:39 - 08:46:39 -2988
Bend 08:31:40 -55.9 Dark Up 45.2 203.7 Up 08:16:40 - 08:46:40 -3002
Oregon Observatory 08:31:40 -56.1 Dark Up 45.4 203.6 Up 08:16:40 - 08:46:40 -3013
La Pine/Gilchrist 08:31:40 -56.3 Dark Up 45.6 203.6 Up 08:16:40 - 08:46:40 -3029
North Lake 08:31:39 -56.6 Dark Up 45.8 204.6 Up 08:16:39 - 08:46:39 -3082
Chiloquin 08:31:42 -57.4 Dark Up 46.7 203.6 Up 08:16:42 - 08:46:42 -3113
Paisley 08:31:38 -57.0 Dark Up 46.2 205.4 Up 08:16:38 - 08:46:38 -3140
Klamath Falls 08:31:42 -57.7 Dark Up 47.0 203.9 Up 08:16:42 - 08:46:42 -3145
Tulelake 08:31:41 -57.9 Dark Up 47.1 204.4 Up 08:16:41 - 08:46:41 -3177
Lakeview 08:31:38 -57.4 Dark Up 46.6 205.9 Up 08:16:38 - 08:46:38 -3189
Cedarville 08:31:37 -58.0 Dark Up 47.1 206.4 Up 08:16:37 - 08:46:37 -3251
Fall River/Burney 08:31:41 -58.8 Dark Up 47.9 204.9 Up 08:16:41 - 08:46:41 -3258
Susanville 08:31:39 -59.1 Dark Up 48.3 206.3 Up 08:16:39 - 08:46:39 -3335
Greenville 08:31:40 -59.5 Dark Up 48.6 206.0 Up 08:16:40 - 08:46:40 -3351
Gimple 08:31:40 -59.5 Dark Up 48.6 206.1 Up 08:16:40 - 08:46:40 -3353
Quincy 08:31:41 -59.7 Dark Up 48.8 206.1 Up 08:16:41 - 08:46:41 -3369
Portola 08:31:39 -59.7 Dark Up 48.7 206.9 Up 08:16:39 - 08:46:39 -3394
Reno 08:31:37 -59.7 Dark Up 48.7 207.9 Up 08:16:37 - 08:46:37 -3437
Carson City 08:31:37 -60.0 Dark Up 49.1 208.1 Up 08:16:37 - 08:46:37 -3470
Gardnerville 08:31:37 -60.2 Dark Up 49.3 208.3 Up 08:16:37 - 08:46:37 -3493
Yerington 08:31:36 -60.0 Dark Up 49.0 209.1 Up 08:16:36 - 08:46:36 -3506
Hawthorne 08:31:34 -60.2 Dark Up 49.2 210.1 Up 08:16:34 - 08:46:34 -3564
Lee Vining 08:31:36 -60.9 Dark Up 49.9 209.8 Up 08:16:36 - 08:46:36 -3601
Tonopah 08:31:30 -60.1 Dark Up 49.0 212.4 Up 08:16:30 - 08:46:30 -3648
Bishop 08:31:34 -61.2 Dark Up 50.1 211.2 Up 08:16:34 - 08:46:34 -3677
Lone Pine 08:31:33 -61.7 Dark Up 50.6 212.1 Up 08:16:33 - 08:46:33 -3757
Beatty 08:31:29 -60.9 Dark Up 49.8 213.7 Up 08:16:29 - 08:46:29 -3768
Niwot 08:30:55 -52.8 Dark Up 41.6 225.9 Up 08:15:55 - 08:45:55 -3786
SwRI 08:30:56 -52.9 Dark Up 41.7 225.8 Up 08:15:56 - 08:45:56 -3793
CPSLO 08:31:42 -63.8 Dark Up 52.8 209.2 Up 08:16:42 - 08:46:42 -3798
Indian Springs 08:31:26 -60.8 Dark Up 49.6 215.4 Up 08:16:26 - 08:46:26 -3831
Henderson 08:31:24 -60.9 Dark Up 49.7 216.7 Up 08:16:24 - 08:46:24 -3902
Searchlight/Boulder City 08:31:24 -61.3 Dark Up 50.1 217.2 Up 08:16:24 - 08:46:24 -3958
Wildwood 08:31:36 -64.1 Dark Up 53.0 213.1 Up 08:16:36 - 08:46:36 -3976
Patrick 08:31:21 -60.8 Dark Up 49.6 218.7 Up 08:16:21 - 08:46:21 -3994
Laughlin/Bullhead City 08:31:23 -61.4 Dark Up 50.2 217.9 Up 08:16:23 - 08:46:23 -3996
Kingman/Dolan Springs 08:31:22 -61.1 Dark Up 49.9 218.6 Up 08:16:22 - 08:46:22 -4010
Mohave Valley 08:31:23 -61.6 Dark Up 50.4 218.1 Up 08:16:23 - 08:46:23 -4023
DCO 08:31:19 -60.7 Dark Up 49.5 219.8 Up 08:16:19 - 08:46:19 -4044
Lake Havasu City 08:31:23 -61.8 Dark Up 50.6 218.7 Up 08:16:23 - 08:46:23 -4068
Idyllwild 08:31:30 -63.6 Dark Up 52.4 216.1 Up 08:16:30 - 08:46:30 -4068
Parker 08:31:23 -62.0 Dark Up 50.8 219.1 Up 08:16:23 - 08:46:23 -4103
Blythe 08:31:24 -62.6 Dark Up 51.4 219.1 Up 08:16:24 - 08:46:24 -4144
Calipatria 08:31:27 -63.5 Dark Up 52.3 218.2 Up 08:16:27 - 08:46:27 -4163
Yuma 08:31:24 -63.3 Dark Up 52.1 219.8 Up 08:16:24 - 08:46:24 -4232

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 03QX111, (2021/10/22 08:34UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.5 -29:37:23  1.2 46.98  75
68Omi Cet      02:19:20.8 -02:58:45  2.0 14.50  22
PPM 144619     01:26:53.6 +03:32:06  6.5  1.95  27
PPM 144592     01:25:20.3 +01:27:37  8.0  0.32  29
PPM 144547     01:23:37.2 +01:54:06  9.8  0.29  29
PPM 144543     01:23:26.5 +01:45:00 10.6  0.25  29
03QX111        01:24:23.8 +01:41:01 15.8        29
Positions are for J2000

Event circumstances last updated at 2019/06/01 22:17:05 UT

Marc W. Buie, Southwest Research Institute

RECON