Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NPP and LANDSAT-9 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 5/15/2023
Index Date (NPP) Time (NPP) Lat,Lon (NPP) SZA (NPP ) Date (LANDSAT-9) Time (LANDSAT-9) Lat,Lon (LANDSAT-9) SZA (LANDSAT-9 ) Distance(km) Time Diff (sec)
1 05/16/2023 13:26:41 -70.40, 154.83 128.81 05/16/2023 13:27:17 -70.37, 154.80 128.84 3.16 36
2 05/16/2023 14:17:25 70.29, -37.69 51.07 05/16/2023 14:16:44 70.27, -37.70 51.06 1.90 41
3 05/19/2023 04:52:59 70.83, 102.58 51.05 05/19/2023 04:54:10 70.71, 103.55 50.90 37.98 71
4 05/19/2023 05:43:34 -70.37, -89.36 129.44 05/19/2023 05:43:44 -70.37, -89.31 129.44 1.73 10
5 05/19/2023 06:34:18 70.26, 78.12 50.45 05/19/2023 06:33:11 70.27, 78.18 50.46 2.50 67
6 05/21/2023 21:09:44 70.39,-140.94 50.04 05/21/2023 21:10:42 70.41,-141.02 50.05 3.47 58
7 05/21/2023 22:00:26 -70.29, 26.53 130.07 05/21/2023 22:00:12 -70.29, 26.45 130.07 3.03 14
8 05/21/2023 22:50:58 69.55,-165.05 49.17 05/21/2023 22:49:50 69.58,-166.90 49.23 72.00 68
9 05/24/2023 13:26:37 70.38, -25.15 49.51 05/24/2023 13:27:08 70.41, -25.13 49.54 3.46 31
10 05/24/2023 14:17:19 -70.27, 142.33 130.60 05/24/2023 14:16:38 -70.30, 142.34 130.58 2.81 41
11 05/27/2023 04:52:51 -70.78, -77.33 130.54 05/27/2023 04:54:02 -70.71, -76.44 130.63 33.75 71
12 05/27/2023 05:43:28 70.32, 90.72 48.98 05/27/2023 05:43:34 70.33, 90.64 48.99 3.21 6
13 05/27/2023 06:34:10 -70.21,-101.80 131.14 05/27/2023 06:33:04 -70.22,-101.88 131.13 3.17 66

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 5/15/2023
SNOs_Map_NPP_LANDSAT-9_20230515.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 05/15/2023 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9