RECON: TNO occultation with 525815

Event between (525815) 05SD278 and star GA0920:00430891 with event index number of 1594466

Geocentric closest approach at 2022/12/23 06:58:31 UTC

J2000 position of star is 04:31:24.9 +03:30:21
Equinox of date position of star is 04:32:26.6 +03:32:48
Stellar brightness G=13.3, use SENSEUP=32
Star is 149 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=22.7

[RECON map]
TNO is 44.2 AU from the Sun and 43.3 AU from the Earth.
The TNO is moving 23.1 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 165 seconds.
The 1-sigma cross-track error in the shadow position is 1759 km.
The sky-plane scale is 31409.8 km/arcsec.

The TNO has an absolute magnitude Hv=6.2
Diameter=346.7 km assuming a 5% albedo -- 15.0 sec chord
Diameter=141.6 km assuming a 30% albedo -- 6.1 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 525815, (2022/12/23 06:59UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:14.5 +16:33:14  0.8 13.05 158
67Bet Eri      05:08:58.8 -05:03:30  2.8 12.51 146
PPM 147685     04:35:21.7 +05:36:55  5.8  2.17 151
PPM 147588     04:30:02.2 +02:25:14  8.4  1.30 147
PPM 147625     04:32:08.1 +03:31:08  9.0  0.13 149
525815         04:32:37.3 +03:33:13 13.3       149
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 19.7 km RECON observability=1.0 and success probability=22.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 06:58:08 -61.2 Dark Down 43.0 192.5 Up 06:43:51 - 07:12:24 -171
Summerland 06:58:09 -61.4 Dark Down 43.3 192.1 Up 06:43:52 - 07:12:25 -194
Penticton 06:58:08 -61.4 Dark Down 43.4 192.3 Up 06:43:52 - 07:12:25 -199
Okanagan Falls 06:58:08 -61.6 Dark Down 43.5 192.3 Up 06:43:52 - 07:12:25 -214
Oliver 06:58:08 -61.8 Dark Down 43.7 192.4 Up 06:43:51 - 07:12:24 -226
Anarchist Mountain Observatory 06:58:07 -62.0 Dark Down 43.8 192.7 Up 06:43:51 - 07:12:24 -239
Oroville 06:58:07 -62.0 Dark Down 43.9 192.6 Up 06:43:51 - 07:12:24 -245
Tonasket 06:58:07 -62.2 Dark Down 44.1 192.6 Up 06:43:51 - 07:12:24 -263
Okanogan 06:58:08 -62.5 Dark Down 44.5 192.5 Up 06:43:51 - 07:12:24 -290
Brewster 06:58:08 -62.6 Dark Down 44.8 192.3 Up 06:43:52 - 07:12:25 -312
Manson/Chelan 06:58:09 -62.7 Dark Down 45.0 191.8 Up 06:43:53 - 07:12:26 -329
Wenatchee 06:58:09 -63.0 Dark Down 45.5 191.7 Up 06:43:53 - 07:12:26 -367
Ellensburg 06:58:10 -63.3 Dark Down 46.0 191.5 Up 06:43:53 - 07:12:26 -401
Yakima 06:58:10 -63.6 Dark Down 46.4 191.5 Up 06:43:53 - 07:12:26 -434
Toppenish/White Swan 06:58:09 -63.8 Dark Down 46.6 191.8 Up 06:43:53 - 07:12:26 -451
Pasco 06:58:05 -64.4 Dark Down 46.5 193.6 Up 06:43:48 - 07:12:21 -458
PNWRO 06:58:04 -64.7 Dark Down 46.7 194.0 Up 06:43:48 - 07:12:21 -478
Goldendale 06:58:10 -64.1 Dark Down 47.2 191.3 Up 06:43:54 - 07:12:27 -497
The Dalles 06:58:11 -64.2 Dark Down 47.4 190.8 Up 06:43:55 - 07:12:28 -516
Maupin 06:58:11 -64.5 Dark Down 47.8 191.1 Up 06:43:54 - 07:12:27 -550
Madras/Culver 06:58:11 -65.0 Dark Down 48.4 191.1 Up 06:43:54 - 07:12:27 -596
Sisters 06:58:12 -65.0 Dark Down 48.8 190.5 Up 06:43:56 - 07:12:29 -625
Redmond 06:58:11 -65.2 Dark Down 48.7 191.1 Up 06:43:54 - 07:12:27 -626
Bend 06:58:11 -65.3 Dark Down 49.0 191.0 Up 06:43:54 - 07:12:27 -644
Oregon Observatory 06:58:11 -65.4 Dark Down 49.1 190.8 Up 06:43:55 - 07:12:28 -659
La Pine/Gilchrist 06:58:11 -65.5 Dark Down 49.4 190.8 Up 06:43:55 - 07:12:28 -677
North Lake 06:58:09 -66.2 Dark Down 49.7 191.8 Up 06:43:53 - 07:12:26 -712
Paisley 06:58:08 -66.7 Dark Down 50.2 192.4 Up 06:43:51 - 07:12:24 -759
Chiloquin 06:58:12 -66.2 Dark Down 50.5 190.5 Up 06:43:56 - 07:12:29 -773
Klamath Falls 06:58:12 -66.5 Dark Down 50.8 190.7 Up 06:43:55 - 07:12:28 -802
Lakeview 06:58:07 -67.2 Dark Down 50.6 192.9 Up 06:43:50 - 07:12:23 -802
Tulelake 06:58:11 -66.9 Dark Down 51.0 191.2 Up 06:43:54 - 07:12:27 -825
Cedarville 06:58:06 -67.8 Dark Down 51.3 193.3 Up 06:43:49 - 07:12:22 -859
Fall River/Burney 06:58:10 -67.6 Dark Down 51.9 191.5 Up 06:43:53 - 07:12:26 -904
SwRI 06:57:13 -73.4 Dark Down 48.0 215.6 Up 06:42:56 - 07:11:29 -949
Susanville 06:58:07 -68.4 Dark Down 52.4 192.9 Up 06:43:50 - 07:12:23 -958
Greenville 06:58:08 -68.5 Dark Down 52.7 192.5 Up 06:43:51 - 07:12:24 -983
Gimple 06:58:08 -68.5 Dark Down 52.7 192.6 Up 06:43:51 - 07:12:24 -983
Quincy 06:58:08 -68.6 Dark Down 52.9 192.5 Up 06:43:51 - 07:12:24 -1001
Portola 06:58:06 -68.9 Dark Down 53.0 193.4 Up 06:43:49 - 07:12:22 -1011
Reno 06:58:04 -69.5 Dark Down 53.1 194.5 Up 06:43:47 - 07:12:20 -1033
Carson City 06:58:03 -69.7 Dark Down 53.5 194.6 Up 06:43:47 - 07:12:20 -1066
Yerington 06:58:01 -70.2 Dark Down 53.5 195.7 Up 06:43:44 - 07:12:17 -1082
Gardnerville 06:58:03 -69.9 Dark Down 53.7 194.8 Up 06:43:46 - 07:12:19 -1088
Hawthorne 06:57:59 -70.8 Dark Down 53.9 196.8 Up 06:43:42 - 07:12:15 -1122
Tonopah 06:57:53 -71.9 Dark Down 54.0 199.3 Up 06:43:37 - 07:12:10 -1161
Lee Vining 06:58:00 -71.0 Dark Down 54.5 196.2 Up 06:43:44 - 07:12:17 -1175
Bishop 06:57:57 -71.8 Dark Down 54.9 197.6 Up 06:43:41 - 07:12:14 -1228
Beatty 06:57:51 -73.0 Dark Down 54.9 200.5 Up 06:43:34 - 07:12:07 -1266
Indian Springs 06:57:46 -73.8 Dark Down 54.9 202.5 Up 06:43:30 - 07:12:03 -1293
Lone Pine 06:57:55 -72.5 Dark Down 55.6 198.5 Up 06:43:39 - 07:12:12 -1297
Henderson 06:57:44 -74.6 Dark Down 55.2 203.9 Up 06:43:27 - 07:12:00 -1341
Searchlight/Boulder City 06:57:43 -75.1 Dark Down 55.7 204.4 Up 06:43:26 - 07:11:59 -1394
Patrick 06:57:39 -75.6 Dark Down 55.4 206.1 Up 06:43:22 - 07:11:55 -1396
Kingman/Dolan Springs 06:57:39 -75.7 Dark Down 55.7 205.9 Up 06:43:23 - 07:11:56 -1418
Laughlin/Bullhead City 06:57:41 -75.5 Dark Down 55.9 205.1 Up 06:43:25 - 07:11:58 -1421
CPSLO 06:58:05 -71.8 Dark Down 57.4 194.6 Up 06:43:48 - 07:12:21 -1425
Mohave Valley 06:57:41 -75.7 Dark Down 56.1 205.3 Up 06:43:25 - 07:11:58 -1447
Lake Havasu City 06:57:40 -76.1 Dark Down 56.4 205.9 Up 06:43:23 - 07:11:56 -1484
Parker 06:57:40 -76.4 Dark Down 56.7 206.2 Up 06:43:23 - 07:11:56 -1517
Wildwood 06:57:56 -73.9 Dark Down 58.1 198.8 Up 06:43:40 - 07:12:13 -1535
George/Scottsdale 06:57:30 -77.9 Dark Down 56.1 210.5 Up 06:43:13 - 07:11:46 -1550
Idyllwild 06:57:49 -75.3 Dark Down 57.9 202.4 Up 06:43:32 - 07:12:05 -1563
Blythe 06:57:40 -76.6 Dark Down 57.3 206.1 Up 06:43:24 - 07:11:57 -1568
Calipatria 06:57:44 -76.4 Dark Down 58.0 204.8 Up 06:43:27 - 07:12:00 -1618
Yuma 06:57:40 -77.3 Dark Down 58.1 206.7 Up 06:43:23 - 07:11:56 -1657

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 525815, (2022/12/23 06:59UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 13.05 158
67Bet Eri      05:07:50.8 -05:05:13  2.8 12.51 146
PPM 147685     04:34:08.2 +05:34:07  5.8  2.17 151
PPM 147588     04:28:50.3 +02:22:17  8.4  1.30 147
PPM 147625     04:30:55.7 +03:28:14  9.0  0.13 149
525815         04:31:24.9 +03:30:21 13.3       149
Positions are for J2000

Event circumstances last updated at 2019/07/31 22:06:24 UT

Marc W. Buie, Southwest Research Institute

RECON