Orbital elements of DELTA 1 DEB
| Launched | 28 July 1976 | 
| Flight ended | – | 
| Launch site | Air Force Western Test Range, California, USA | 
| Owner | United States | 
| NORAD ID | 12539 | 
| 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 31 18:57 | 2025 Oct 24 15:20:43 | 101.7000 | 0.03708 | 13.3682 | 42.0577 | 21.1925 | 12.78588 | – | 
| 2025 Oct 30 18:57 | 2025 Oct 24 15:20:43 | 101.7000 | 0.03708 | 13.3682 | 42.0577 | 21.1925 | 12.78588 | – | 
| 2025 Oct 29 18:57 | 2025 Oct 24 15:20:43 | 101.7000 | 0.03708 | 13.3682 | 42.0577 | 21.1925 | 12.78588 | – | 
| 2025 Oct 28 18:57 | 2025 Oct 22 05:34:16 | 101.7001 | 0.03695 | 13.2021 | 46.8251 | 21.1925 | 12.78588 | – | 
| 2025 Oct 27 18:57 | 2025 Oct 22 05:34:16 | 101.7001 | 0.03695 | 13.2021 | 46.8251 | 21.1925 | 12.78588 | – | 
| 2025 Oct 26 18:57 | 2025 Oct 22 05:34:16 | 101.7001 | 0.03695 | 13.2021 | 46.8251 | 21.1925 | 12.78588 | – | 
| 2025 Oct 25 17:57 | 2025 Oct 22 05:34:16 | 101.7001 | 0.03695 | 13.2021 | 46.8251 | 21.1925 | 12.78588 | – | 
| 2025 Oct 24 17:57 | 2025 Oct 22 05:34:16 | 101.7001 | 0.03695 | 13.2021 | 46.8251 | 21.1925 | 12.78588 | – | 
| 2025 Oct 22 17:56 | 2025 Oct 18 07:32:58 | 101.7011 | 0.03665 | 12.9316 | 54.6829 | 21.1925 | 12.78588 | – | 
| 2025 Oct 21 17:56 | 2025 Oct 18 07:32:58 | 101.7011 | 0.03665 | 12.9316 | 54.6829 | 21.1925 | 12.78588 | – | 
| 2025 Oct 20 17:56 | 2025 Oct 18 07:32:58 | 101.7011 | 0.03665 | 12.9316 | 54.6829 | 21.1925 | 12.78588 | – | 
| 2025 Oct 19 17:56 | 2025 Oct 18 07:32:58 | 101.7011 | 0.03665 | 12.9316 | 54.6829 | 21.1925 | 12.78588 | – | 
| 2025 Oct 18 17:56 | 2025 Oct 18 07:32:58 | 101.7011 | 0.03665 | 12.9316 | 54.6829 | 21.1925 | 12.78588 | – | 
| 2025 Oct 17 17:56 | 2025 Oct 07 05:02:53 | 101.6999 | 0.03610 | 12.1655 | 77.0807 | 21.1925 | 12.78588 | – | 
| 2025 Oct 16 17:56 | 2025 Oct 07 05:02:53 | 101.6999 | 0.03610 | 12.1655 | 77.0807 | 21.1925 | 12.78588 | – | 
| 2025 Oct 15 17:56 | 2025 Oct 07 05:02:53 | 101.6999 | 0.03610 | 12.1655 | 77.0807 | 21.1925 | 12.78588 | – | 
| 2025 Oct 14 17:56 | 2025 Oct 07 05:02:53 | 101.6999 | 0.03610 | 12.1655 | 77.0807 | 21.1925 | 12.78588 | – | 
| 2025 Oct 12 17:56 | 2025 Oct 07 05:02:53 | 101.6999 | 0.03610 | 12.1655 | 77.0807 | 21.1925 | 12.78588 | – | 
| 2025 Oct 11 17:57 | 2025 Oct 07 05:02:53 | 101.6999 | 0.03610 | 12.1655 | 77.0807 | 21.1925 | 12.78588 | – | 
| 2025 Oct 09 17:56 | 2025 Oct 07 05:02:53 | 101.6999 | 0.03610 | 12.1655 | 77.0807 | 21.1925 | 12.78588 | – | 
| 2025 Oct 08 17:56 | 2025 Oct 07 05:02:53 | 101.6999 | 0.03610 | 12.1655 | 77.0807 | 21.1925 | 12.78588 | – | 
| 2025 Oct 07 17:56 | 2025 Oct 07 05:02:53 | 101.6999 | 0.03610 | 12.1655 | 77.0807 | 21.1925 | 12.78588 | – | 
| 2025 Oct 05 17:56 | 2025 Sep 25 16:22:39 | 101.6970 | 0.03563 | 11.3702 | 100.7401 | 21.1925 | 12.78588 | – | 
| 2025 Oct 04 17:57 | 2025 Sep 25 16:22:39 | 101.6970 | 0.03563 | 11.3702 | 100.7401 | 21.1925 | 12.78588 | – |