RECON: TNO occultation with 499514

Event between (499514) 10OO127 and star GA1040:18752756 with event index number of 1257276

Geocentric closest approach at 2022/07/21 06:24:56 UTC

J2000 position of star is 22:26:53.1 +14:27:29
Equinox of date position of star is 22:27:50.2 +14:33:27
Stellar brightness G=15.8, use SENSEUP=128
Star is 56 degrees from the moon. Moon is 43% illuminated.
TNO apparent brightness V=21.2

[RECON map]
TNO is 45.0 AU from the Sun and 44.3 AU from the Earth.
The TNO is moving 17.7 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 817 seconds.
The 1-sigma cross-track error in the shadow position is 2815 km.
The sky-plane scale is 32124.6 km/arcsec.

The TNO has an absolute magnitude Hv=4.6
Diameter=724.5 km assuming a 5% albedo -- 40.9 sec chord
Diameter=295.8 km assuming a 30% albedo -- 16.7 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 499514, (2022/07/21 06:25UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:12.1 +45:21:43  1.3 38.01  77
Markab         23:05:53.2 +15:19:37  2.5  9.18  47
PPM 141560     22:33:46.4 +13:09:40  6.5  1.99  55
PPM 141412     22:25:06.5 +15:23:46  6.8  1.08  57
PPM 141483     22:29:14.9 +14:28:14 10.0  0.32  56
PPM 141477     22:29:00.3 +14:35:47 10.6  0.25  56
499514         22:27:59.4 +14:34:25 15.8        56
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 1.1 sigma about the mid-time.
The median site spacing is 19.5 km RECON observability=1.0 and success probability=11.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 06:28:17 -16.5 AT Down 30.2 104.0 Up 06:13:17 - 06:43:17 4144
Summerland 06:28:19 -16.7 AT Down 30.1 103.6 Up 06:13:19 - 06:43:19 4124
Penticton 06:28:19 -16.8 AT Down 30.2 103.7 Up 06:13:19 - 06:43:19 4117
Okanagan Falls 06:28:20 -17.0 AT Down 30.2 103.5 Up 06:13:20 - 06:43:20 4102
Oliver 06:28:21 -17.1 AT Down 30.2 103.5 Up 06:13:21 - 06:43:21 4089
Anarchist Mountain Observatory 06:28:22 -17.3 AT Down 30.4 103.5 Up 06:13:22 - 06:43:22 4072
Oroville 06:28:21 -17.4 AT Down 30.4 103.4 Up 06:13:21 - 06:43:21 4067
Tonasket 06:28:23 -17.6 AT Down 30.4 103.3 Up 06:13:23 - 06:43:23 4048
Okanogan 06:28:24 -17.9 AT Down 30.4 103.0 Up 06:13:24 - 06:43:24 4023
Brewster 06:28:26 -18.1 Dark Down 30.4 102.7 Up 06:13:26 - 06:43:26 4004
Manson/Chelan 06:28:27 -18.2 Dark Down 30.2 102.3 Up 06:13:27 - 06:43:27 3993
Entiat 06:28:28 -18.3 Dark Down 30.2 102.1 Up 06:13:28 - 06:43:28 3976
Wenatchee 06:28:30 -18.6 Dark Down 30.2 101.9 Up 06:13:30 - 06:43:30 3956
Ellensburg 06:28:32 -18.9 Dark Down 30.1 101.4 Up 06:13:32 - 06:43:32 3926
Yakima 06:28:33 -19.2 Dark Down 30.2 101.2 Up 06:13:33 - 06:43:33 3892
Toppenish/White Swan 06:28:34 -19.5 Dark Down 30.3 101.2 Up 06:13:34 - 06:43:34 3871
Pasco 06:28:32 -19.9 Dark Down 31.2 102.2 Up 06:13:32 - 06:43:32 3839
Goldendale 06:28:37 -19.9 Dark Down 30.2 100.6 Up 06:13:37 - 06:43:37 3832
The Dalles 06:28:39 -20.0 Dark Down 29.9 100.2 Low 06:13:39 - 06:43:39 3819
George/Umatilla 06:28:34 -20.2 Dark Down 31.1 101.8 Up 06:13:34 - 06:43:34 3815
PNWRO 06:28:32 -20.2 Dark Down 31.4 102.2 Up 06:13:32 - 06:43:32 3815
Maupin 06:28:40 -20.4 Dark Down 30.1 100.0 Up 06:13:40 - 06:43:40 3782
Madras/Culver 06:28:42 -20.9 Dark Down 30.2 99.7 Up 06:13:42 - 06:43:42 3736
Sisters 06:28:45 -21.0 Dark Down 29.9 99.1 Low 06:13:45 - 06:43:45 3715
Redmond 06:28:44 -21.2 Dark Down 30.2 99.4 Up 06:13:44 - 06:43:44 3706
Bend 06:28:45 -21.3 Dark Down 30.1 99.2 Up 06:13:45 - 06:43:45 3690
Oregon Observatory 06:28:46 -21.4 Dark Down 30.1 99.0 Up 06:13:46 - 06:43:46 3677
La Pine/Gilchrist 06:28:47 -21.6 Dark Down 30.1 98.9 Up 06:13:47 - 06:43:47 3660
North Lake 06:28:47 -22.2 Dark Down 30.6 99.1 Up 06:13:47 - 06:43:47 3612
Chiloquin 06:28:52 -22.5 Dark Down 30.0 98.0 Low 06:13:52 - 06:43:52 3570
Paisley 06:28:48 -22.8 Dark Down 30.9 99.0 Up 06:13:48 - 06:43:48 3557
Klamath Falls 06:28:53 -22.8 Dark Down 30.1 97.8 Up 06:13:53 - 06:43:53 3538
Tulelake 06:28:53 -23.2 Dark Down 30.4 97.9 Up 06:13:53 - 06:43:53 3509
Lakeview 06:28:50 -23.3 Dark Down 31.1 98.9 Up 06:13:50 - 06:43:50 3508
Cedarville 06:28:52 -24.0 Dark Down 31.4 98.6 Up 06:13:52 - 06:43:52 3447
Fall River/Burney 06:28:56 -24.0 Dark Down 30.5 97.4 Up 06:13:56 - 06:43:56 3426
Susanville 06:28:57 -24.8 Dark Down 31.2 97.6 Up 06:13:57 - 06:43:57 3355
Greenville 06:28:59 -25.0 Dark Down 31.0 97.2 Up 06:13:59 - 06:43:59 3336
Gimple 06:28:58 -25.0 Dark Down 31.1 97.3 Up 06:13:58 - 06:43:58 3334
Quincy 06:28:59 -25.2 Dark Down 31.0 97.1 Up 06:13:59 - 06:43:59 3317
Portola 06:28:58 -25.4 Dark Down 31.4 97.4 Up 06:13:58 - 06:43:58 3297
Reno 06:28:58 -25.9 Dark Down 31.9 97.7 Up 06:13:58 - 06:43:58 3260
Carson City 06:28:59 -26.2 Dark Down 32.0 97.5 Up 06:13:59 - 06:43:59 3227
Gardnerville 06:29:00 -26.5 Dark Down 32.1 97.3 Up 06:14:00 - 06:44:00 3203
Yerington 06:28:58 -26.6 Dark Down 32.5 97.8 Up 06:13:58 - 06:43:58 3197
Hawthorne 06:28:59 -27.2 Dark Down 33.0 97.8 Up 06:13:59 - 06:43:59 3144
Lee Vining 06:29:01 -27.6 Dark Down 32.7 97.2 Up 06:14:01 - 06:44:01 3101
Tonopah 06:28:56 -28.1 Dark Down 34.2 98.5 Up 06:13:56 - 06:43:56 3074
Niwot 06:28:14 -28.8 Dark Down 42.6 109.3 Up 06:13:14 - 06:43:14 3061
SwRI 06:28:15 -28.8 Dark Down 42.6 109.2 Up 06:13:15 - 06:43:15 3052
Bishop 06:29:02 -28.3 Dark Down 33.3 97.3 Up 06:14:02 - 06:44:02 3031
Beatty 06:28:59 -29.3 Dark Down 34.7 98.0 Up 06:13:59 - 06:43:59 2956
Lone Pine 06:29:04 -29.1 Dark Down 33.7 97.0 Up 06:14:04 - 06:44:04 2952
Indian Springs 06:28:57 -29.9 Dark Down 35.6 98.5 Up 06:13:57 - 06:43:57 2904
CPSLO 06:29:14 -29.4 Dark Down 31.8 94.5 Up 06:14:14 - 06:44:14 2880
Henderson 06:28:56 -30.6 Dark Down 36.2 98.6 Up 06:13:56 - 06:43:56 2840
Searchlight/Boulder City 06:28:58 -31.2 Dark Down 36.4 98.3 Up 06:13:58 - 06:43:58 2784
Patrick 06:28:56 -31.5 Dark Down 37.2 98.9 Up 06:13:56 - 06:43:56 2759
Laughlin/Bullhead City 06:28:59 -31.5 Dark Down 36.7 98.3 Up 06:13:59 - 06:43:59 2748
Kingman/Dolan Springs 06:28:57 -31.7 Dark Down 37.1 98.6 Up 06:13:57 - 06:43:57 2741
Wildwood 06:29:12 -31.2 Dark Down 33.6 95.0 Up 06:14:12 - 06:44:12 2722
Mohave Valley 06:28:59 -31.8 Dark Down 36.7 98.1 Up 06:13:59 - 06:43:59 2722
DCO 06:28:54 -32.0 Dark Down 37.8 99.2 Up 06:13:54 - 06:43:54 2716
Lake Havasu City 06:28:59 -32.2 Dark Down 37.0 98.0 Up 06:13:59 - 06:43:59 2678
Idyllwild 06:29:08 -32.2 Dark Down 35.1 95.9 Up 06:14:08 - 06:44:08 2650
Parker 06:29:00 -32.6 Dark Down 37.1 97.7 Up 06:14:00 - 06:44:00 2643
Blythe 06:29:03 -33.0 Dark Down 36.9 97.1 Up 06:14:03 - 06:44:03 2597
Calipatria 06:29:07 -33.2 Dark Down 36.2 96.2 Up 06:14:07 - 06:44:07 2567
Yuma 06:29:05 -33.8 Dark Down 37.0 96.4 Up 06:14:05 - 06:44:05 2507

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 499514, (2022/07/21 06:25UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 38.01  77
Markab         23:04:45.7 +15:12:18  2.5  9.18  47
PPM 141560     22:32:39.6 +13:02:40  6.5  1.99  55
PPM 141412     22:24:00.5 +15:16:53  6.8  1.08  57
PPM 141483     22:28:08.5 +14:21:17 10.0  0.32  56
PPM 141477     22:27:54.0 +14:28:51 10.6  0.25  56
499514         22:26:53.1 +14:27:29 15.8        56
Positions are for J2000

Event circumstances last updated at 2019/06/08 03:53:09 UT

Marc W. Buie, Southwest Research Institute

RECON