Orbital elements of VANGUARD 3
| Launched | 17 September 1959 | 
| Flight ended | – | 
| Launch site | Air Force Eastern Test Range, Florida, USA | 
| Owner | United States | 
| NORAD ID | 20 | 
| Date fetched | Epoch osculation | Inc. [°] | Ecc. | RA asc node [hr] | Arg Peri. [°] | Mean anom [°] | Mean motion [rev/day] | Abs. mag | 
| Date fetched | Epoch osculation | Inc. [°] | Ecc. | RA asc node [hr] | Arg Peri. [°] | Mean anom [°] | Mean motion [rev/day] | Abs. mag | 
| 2025 Oct 30 18:57 | 2025 Oct 29 12:41:42 | 33.3574 | 0.16405 | 1.1464 | 257.3407 | 83.9538 | 11.61348 | 8.243 | 
| 2025 Oct 29 18:57 | 2025 Oct 29 12:41:42 | 33.3574 | 0.16405 | 1.1464 | 257.3407 | 83.9538 | 11.61348 | 8.243 | 
| 2025 Oct 28 18:57 | 2025 Oct 23 22:33:34 | 33.3536 | 0.16403 | 2.4860 | 227.4206 | 83.9538 | 11.61348 | 8.243 | 
| 2025 Oct 27 18:57 | 2025 Oct 23 22:33:34 | 33.3536 | 0.16403 | 2.4860 | 227.4206 | 83.9538 | 11.61348 | 8.243 | 
| 2025 Oct 26 18:57 | 2025 Oct 23 22:33:34 | 33.3536 | 0.16403 | 2.4860 | 227.4206 | 83.9538 | 11.61348 | 8.243 | 
| 2025 Oct 25 17:57 | 2025 Oct 23 22:33:34 | 33.3536 | 0.16403 | 2.4860 | 227.4206 | 83.9538 | 11.61348 | 8.243 | 
| 2025 Oct 24 17:57 | 2025 Oct 23 22:33:34 | 33.3536 | 0.16403 | 2.4860 | 227.4206 | 83.9538 | 11.61348 | 8.243 | 
| 2025 Oct 22 17:56 | 2025 Oct 17 18:00:19 | 33.3463 | 0.16397 | 3.9699 | 194.2737 | 83.9538 | 11.61348 | 8.243 | 
| 2025 Oct 21 17:56 | 2025 Oct 17 18:00:19 | 33.3463 | 0.16397 | 3.9699 | 194.2737 | 83.9538 | 11.61348 | 8.243 | 
| 2025 Oct 20 17:56 | 2025 Oct 17 18:00:19 | 33.3463 | 0.16397 | 3.9699 | 194.2737 | 83.9538 | 11.61348 | 8.243 | 
| 2025 Oct 19 17:56 | 2025 Oct 17 18:00:19 | 33.3463 | 0.16397 | 3.9699 | 194.2737 | 83.9538 | 11.61348 | 8.243 | 
| 2025 Oct 18 17:56 | 2025 Oct 17 18:00:19 | 33.3463 | 0.16397 | 3.9699 | 194.2737 | 83.9538 | 11.61348 | 8.243 | 
| 2025 Oct 17 17:56 | 2025 Oct 07 14:32:33 | 33.3390 | 0.16398 | 6.4024 | 139.9318 | 83.9538 | 11.61348 | 8.243 | 
| 2025 Oct 16 17:56 | 2025 Oct 07 14:32:33 | 33.3390 | 0.16398 | 6.4024 | 139.9318 | 83.9538 | 11.61348 | 8.243 | 
| 2025 Oct 15 17:56 | 2025 Oct 07 14:32:33 | 33.3390 | 0.16398 | 6.4024 | 139.9318 | 83.9538 | 11.61348 | 8.243 | 
| 2025 Oct 14 17:56 | 2025 Oct 07 14:32:33 | 33.3390 | 0.16398 | 6.4024 | 139.9318 | 83.9538 | 11.61348 | 8.243 | 
| 2025 Oct 12 17:56 | 2025 Oct 07 14:32:33 | 33.3390 | 0.16398 | 6.4024 | 139.9318 | 83.9538 | 11.61348 | 8.243 | 
| 2025 Oct 11 17:57 | 2025 Oct 07 14:32:33 | 33.3390 | 0.16398 | 6.4024 | 139.9318 | 83.9538 | 11.61348 | 8.243 | 
| 2025 Oct 09 17:56 | 2025 Oct 07 14:32:33 | 33.3390 | 0.16398 | 6.4024 | 139.9318 | 83.9538 | 11.61348 | 8.243 | 
| 2025 Oct 08 17:56 | 2025 Oct 07 14:32:33 | 33.3390 | 0.16398 | 6.4024 | 139.9318 | 83.9538 | 11.61348 | 8.243 | 
| 2025 Oct 07 17:56 | 2025 Oct 07 14:32:33 | 33.3390 | 0.16398 | 6.4024 | 139.9318 | 83.9538 | 11.61348 | 8.243 | 
| 2025 Oct 05 17:56 | 2025 Sep 25 23:53:14 | 33.3384 | 0.16400 | 9.1857 | 77.7656 | 83.9538 | 11.61348 | 8.243 | 
| 2025 Oct 04 17:57 | 2025 Sep 25 23:53:14 | 33.3384 | 0.16400 | 9.1857 | 77.7656 | 83.9538 | 11.61348 | 8.243 | 
| 2025 Oct 03 17:57 | 2025 Sep 25 23:53:14 | 33.3384 | 0.16400 | 9.1857 | 77.7656 | 83.9538 | 11.61348 | 8.243 |