RECON: TNO occultation with 13VF24

Event between 13VF24 and star GA1080:02532030 with event index number of 1784327

Geocentric closest approach at 2027/12/08 10:05:29 UTC

J2000 position of star is 06:57:11.0 +18:41:33
Equinox of date position of star is 06:58:23.6 +18:39:49
Stellar brightness G=15.9, use SENSEUP=128
Star is 93 degrees from the moon. Moon is 71% illuminated.
TNO apparent brightness V=24.6

[RECON map]
TNO is 28.5 AU from the Sun and 27.7 AU from the Earth.
The TNO is moving 21.0 km/sec on the sky relative to the star, or, 3.8 arcsec/hr.
The 1-sigma error in the time of the event is 320 seconds.
The 1-sigma cross-track error in the shadow position is 2678 km.
The sky-plane scale is 20055.6 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=140.6 km assuming a 5% albedo -- 2.9 sec chord
Diameter=57.4 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 13VF24, (2027/12/08 10:05UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:47:01.6 +27:57:23  1.1 14.44 102
Alhena         06:39:19.5 +16:22:23  1.9  5.18  89
PPM 123009     06:47:59.5 +18:48:22  6.5  2.57  91
PPM 123273     06:57:50.0 +18:45:42  8.1  0.26  93
13VF24         06:58:49.1 +18:39:13 15.9        94
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 2.8 sigma about the mid-time.
The median site spacing is 21.5 km RECON observability=1.0 and success probability=15.3%
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 10:05:38 -51.7 Dark Down 58.2 188.6 Up 09:50:38 - 10:20:38 -1120
Kelowna 10:05:39 -52.0 Dark Down 58.6 188.4 Up 09:50:39 - 10:20:39 -1158
Peachland 10:05:39 -52.2 Dark Down 58.8 187.9 Up 09:50:39 - 10:20:39 -1172
Summerland 10:05:39 -52.3 Dark Down 58.9 188.1 Up 09:50:39 - 10:20:39 -1185
Penticton 10:05:38 -52.2 Dark Down 58.9 188.3 Up 09:50:38 - 10:20:38 -1190
Oliver 10:05:38 -52.4 Dark Down 59.3 188.4 Up 09:50:38 - 10:20:38 -1223
Anarchist Mountain Observatory 10:05:37 -52.4 Dark Down 59.4 188.8 Up 09:50:37 - 10:20:37 -1236
Tonasket 10:05:38 -52.6 Dark Down 59.8 188.7 Up 09:50:38 - 10:20:38 -1267
Okanogan 10:05:37 -52.9 Dark Down 60.1 188.5 Up 09:50:37 - 10:20:37 -1300
Brewster 10:05:38 -53.1 Dark Down 60.4 188.2 Up 09:50:38 - 10:20:38 -1328
Victoria 10:05:50 -54.9 Dark Up 60.2 181.3 Up 09:50:50 - 10:20:50 -1331
Manson/Chelan 10:05:39 -53.4 Dark Down 60.6 187.6 Up 09:50:39 - 10:20:39 -1353
Entiat 10:05:39 -53.6 Dark Down 60.9 187.5 Up 09:50:39 - 10:20:39 -1375
Wenatchee 10:05:39 -53.8 Dark Down 61.1 187.3 Up 09:50:39 - 10:20:39 -1400
Ellensburg 10:05:40 -54.1 Dark Down 61.5 187.0 Up 09:50:40 - 10:20:40 -1443
Yakima 10:05:39 -54.4 Dark Down 62.0 187.1 Up 09:50:39 - 10:20:39 -1482
Pasco 10:05:34 -53.7 Dark Down 62.1 190.0 Up 09:50:34 - 10:20:34 -1496
Toppenish/White Swan 10:05:38 -54.4 Dark Down 62.2 187.4 Up 09:50:38 - 10:20:38 -1501
PNWRO 10:05:33 -53.7 Dark Down 62.4 190.5 Up 09:50:33 - 10:20:33 -1517
Goldendale 10:05:39 -54.9 Dark Down 62.7 186.7 Up 09:50:39 - 10:20:39 -1560
The Dalles 10:05:41 -55.2 Dark Down 63.0 186.0 Up 09:50:41 - 10:20:41 -1587
Maupin 10:05:40 -55.4 Dark Down 63.4 186.3 Up 09:50:40 - 10:20:40 -1626
Redmond 10:05:39 -55.9 Dark Down 64.3 186.3 Up 09:50:39 - 10:20:39 -1716
Sisters 10:05:41 -56.1 Dark Down 64.3 185.4 Up 09:50:41 - 10:20:41 -1719
Bend 10:05:39 -56.1 Dark Down 64.5 186.1 Up 09:50:39 - 10:20:39 -1739
Oregon Observatory 10:05:40 -56.2 Dark Down 64.7 185.8 Up 09:50:40 - 10:20:40 -1757
La Pine/Gilchrist 10:05:40 -56.4 Dark Down 64.9 185.7 Up 09:50:40 - 10:20:40 -1778
North Lake 10:05:37 -56.2 Dark Down 65.3 187.2 Up 09:50:37 - 10:20:37 -1814
Niwot 10:04:35 -46.1 Dark Down 63.3 222.2 Up 09:49:35 - 10:19:35 -1855
Paisley 10:05:35 -56.2 Dark Down 65.8 188.1 Up 09:50:35 - 10:20:35 -1864
SwRI 10:04:35 -46.2 Dark Down 63.4 222.2 Up 09:49:35 - 10:19:35 -1868
Lakeview 10:05:34 -56.3 Dark Down 66.3 188.7 Up 09:50:34 - 10:20:34 -1912
Klamath Falls 10:05:40 -57.2 Dark Down 66.4 185.4 Up 09:50:40 - 10:20:40 -1927
Cedarville 10:05:33 -56.4 Dark Down 66.9 189.4 Up 09:50:33 - 10:20:33 -1975
Fall River/Burney 10:05:37 -57.5 Dark Down 67.5 186.6 Up 09:50:37 - 10:20:37 -2041
Susanville 10:05:34 -57.2 Dark Down 68.1 188.6 Up 09:50:34 - 10:20:34 -2094
Gimple 10:05:35 -57.5 Dark Down 68.4 188.2 Up 09:50:35 - 10:20:35 -2126
Greenville 10:05:35 -57.5 Dark Down 68.4 188.0 Up 09:50:35 - 10:20:35 -2127
Quincy 10:05:35 -57.6 Dark Down 68.6 188.1 Up 09:50:35 - 10:20:35 -2147
Portola 10:05:33 -57.3 Dark Down 68.7 189.3 Up 09:50:33 - 10:20:33 -2153
Reno 10:05:30 -56.9 Dark Down 68.8 191.1 Up 09:50:30 - 10:20:30 -2171
Carson City 10:05:30 -57.1 Dark Down 69.2 191.3 Up 09:50:30 - 10:20:30 -2207
Yerington 10:05:27 -56.7 Dark Down 69.3 193.1 Up 09:50:27 - 10:20:27 -2217
Gardnerville 10:05:29 -57.1 Dark Down 69.4 191.6 Up 09:50:29 - 10:20:29 -2231
Hawthorne 10:05:24 -56.4 Dark Down 69.6 194.7 Up 09:50:24 - 10:20:24 -2257
Tonopah 10:05:18 -55.5 Dark Down 69.8 198.8 Up 09:50:18 - 10:20:18 -2282
Lee Vining 10:05:26 -57.0 Dark Down 70.3 193.8 Up 09:50:26 - 10:20:26 -2322
Bishop 10:05:22 -56.6 Dark Down 70.7 196.2 Up 09:50:22 - 10:20:22 -2372
Beatty 10:05:15 -55.5 Dark Down 70.7 201.1 Up 09:50:15 - 10:20:15 -2394
Indian Springs 10:05:11 -54.7 Dark Down 70.7 204.3 Up 09:50:11 - 10:20:11 -2409
Henderson 10:05:07 -54.3 Dark Down 70.9 206.8 Up 09:50:07 - 10:20:07 -2452
Patrick 10:05:02 -53.5 Dark Down 71.1 210.6 Up 09:50:02 - 10:20:02 -2497
Searchlight/Boulder City 10:05:06 -54.4 Dark Down 71.4 207.7 Up 09:50:06 - 10:20:06 -2510
DCO 10:04:58 -53.0 Dark Down 71.0 212.9 Up 09:49:58 - 10:19:58 -2516
Kingman/Dolan Springs 10:05:02 -53.7 Dark Down 71.3 210.4 Up 09:50:02 - 10:20:02 -2523
Laughlin/Bullhead City 10:05:04 -54.1 Dark Down 71.6 209.1 Up 09:50:04 - 10:20:04 -2535
Mohave Valley 10:05:04 -54.2 Dark Down 71.8 209.5 Up 09:50:04 - 10:20:04 -2563
Lake Havasu City 10:05:02 -54.0 Dark Down 72.0 210.8 Up 09:50:02 - 10:20:02 -2600
CPSLO 10:05:29 -58.9 Dark Down 73.1 191.0 Up 09:50:29 - 10:20:29 -2621
George/Scottsdale 10:04:51 -52.2 Dark Down 71.5 218.5 Up 09:49:51 - 10:19:51 -2635
Parker 10:05:02 -54.1 Dark Down 72.3 211.4 Up 09:50:02 - 10:20:02 -2637
Blythe 10:05:02 -54.4 Dark Down 72.9 211.5 Up 09:50:02 - 10:20:02 -2697
Wildwood 10:05:20 -57.5 Dark Down 73.9 198.6 Up 09:50:20 - 10:20:20 -2716
Idyllwild 10:05:11 -56.1 Dark Down 73.6 205.0 Up 09:50:11 - 10:20:11 -2722
Calipatria 10:05:06 -55.2 Dark Down 73.7 209.6 Up 09:50:06 - 10:20:06 -2765
Yuma 10:05:01 -54.5 Dark Down 73.7 213.0 Up 09:50:01 - 10:20:01 -2794

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 13VF24, (2027/12/08 10:05UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 14.44 102
Alhena         06:37:42.8 +16:23:57  1.9  5.18  89
PPM 123009     06:46:21.1 +18:50:16  6.5  2.57  91
PPM 123273     06:56:11.8 +18:48:00  8.1  0.26  93
13VF24         06:57:11.0 +18:41:33 15.9        93
Positions are for J2000

Event circumstances last updated at 2020/09/05 21:35:27 UT

Marc W. Buie, Southwest Research Institute

RECON