메타데이터
| 항목 |
값 |
| Designation |
415P/Tenagra |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2021-02-16T03:55:08.005440Z |
| Orbit solution date (soln_date, UTC) |
2025-04-09T14:05:50Z |
| Obs used |
199 |
| NEO |
- |
| M1 |
7.400 |
| K1 |
19.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2020-12-25T13:33:49.824000Z |
| Discovery magnitude (MPC) |
21.10 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2018-11-04.0000000 |
| e |
0.19516380 |
| q (au) |
3.311953 |
| a (au) |
4.115065 |
| i (deg) |
31.789340 |
| Ω (om, deg) |
160.325572 |
| ω (w, deg) |
346.450161 |
| M (ma, deg) |
261.392377 |
밝기
산란 + 전체 선형
$$
M_a = (10.504 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.504 |
| n |
6.000 |
| gf |
0.997 |
| gb |
-0.732 |
| k |
0.964 |
| δ90 |
10.000 |
| 파라미터 |
기호 |
범위 |
설명 |
| 태양·지구거리 1 AU에서의 절대등급 |
H0 |
-5 to 20 |
혜성의 고유 밝기 |
| 광도 기울기 파라미터 |
n |
2 to 6 |
태양거리 변화에 따른 밝기 변화율 |
| 전방 산란 비대칭 계수 |
gf |
0.8 to 1 |
전방 산란의 강도 |
| 후방 산란 비대칭 계수 |
gb |
-1 to -0.5 |
후방 산란의 강도 |
| 분할 계수 |
k |
0.8 to 1 |
전·후방 산란 기여도 비율 |
| 먼지/가스 밝기 비 |
δ90 |
1 to 10 |
코마에서 먼지 산란 대비 가스 방출의 상대 기여 |
참고: EPSC-DPS2025-160
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
01:15:24.69 |
-07:45:44.2 |
HIP 5799 |
17.88 |
| 2026-07-29 12:00 |
01:15:29.90 |
-07:48:24.3 |
HIP 5799 |
17.77 |
| 2026-07-30 00:00 |
01:15:34.92 |
-07:51:06.0 |
HIP 5799 |
18.09 |
| 2026-07-30 12:00 |
01:15:39.75 |
-07:53:49.2 |
HIP 5799 |
18.83 |
| 2026-07-31 00:00 |
01:15:44.39 |
-07:56:33.9 |
HIP 5799 |
19.95 |
| 2026-07-31 12:00 |
01:15:48.84 |
-07:59:20.1 |
HIP 5799 |
21.38 |
| 2026-08-01 00:00 |
01:15:53.10 |
-08:02:07.8 |
HIP 5799 |
23.07 |
| 2026-08-01 12:00 |
01:15:57.16 |
-08:04:57.0 |
HIP 5799 |
24.97 |
| 2026-08-02 00:00 |
01:16:01.03 |
-08:07:47.7 |
HIP 5799 |
27.03 |
| 2026-08-02 12:00 |
01:16:04.71 |
-08:10:40.0 |
HIP 5799 |
29.23 |
| 2026-08-03 00:00 |
01:16:08.19 |
-08:13:33.7 |
HIP 5799 |
31.54 |
| 2026-08-03 12:00 |
01:16:11.47 |
-08:16:28.8 |
HIP 5799 |
33.94 |
| 2026-08-04 00:00 |
01:16:14.56 |
-08:19:25.5 |
HIP 5799 |
36.41 |
| 2026-08-04 12:00 |
01:16:17.45 |
-08:22:23.6 |
HIP 5741 |
37.90 |
| 2026-08-05 00:00 |
01:16:20.15 |
-08:25:23.2 |
HIP 5741 |
38.94 |
| 2026-08-05 12:00 |
01:16:22.64 |
-08:28:24.2 |
HIP 5741 |
40.15 |
| 2026-08-06 00:00 |
01:16:24.94 |
-08:31:26.7 |
HIP 5741 |
41.51 |
| 2026-08-06 12:00 |
01:16:27.03 |
-08:34:30.6 |
HIP 5741 |
43.01 |
| 2026-08-07 00:00 |
01:16:28.93 |
-08:37:36.0 |
HIP 6159 |
41.78 |
| 2026-08-07 12:00 |
01:16:30.62 |
-08:40:42.8 |
HIP 6159 |
40.09 |
| 2026-08-08 00:00 |
01:16:32.12 |
-08:43:50.9 |
HIP 6159 |
38.63 |
| 2026-08-08 12:00 |
01:16:33.41 |
-08:47:00.5 |
HIP 6159 |
37.41 |
| 2026-08-09 00:00 |
01:16:34.50 |
-08:50:11.5 |
HIP 6159 |
36.48 |
| 2026-08-09 12:00 |
01:16:35.38 |
-08:53:23.9 |
HIP 6159 |
35.87 |
| 2026-08-10 00:00 |
01:16:36.06 |
-08:56:37.6 |
HIP 6159 |
35.58 |
| 2026-08-10 12:00 |
01:16:36.54 |
-08:59:52.7 |
HIP 6159 |
35.64 |
| 2026-08-11 00:00 |
01:16:36.81 |
-09:03:09.2 |
HIP 6159 |
36.04 |
| 2026-08-11 12:00 |
01:16:36.88 |
-09:06:26.9 |
HIP 6159 |
36.79 |
| 2026-08-12 00:00 |
01:16:36.75 |
-09:09:46.0 |
HIP 6159 |
37.87 |
| 2026-08-12 12:00 |
01:16:36.41 |
-09:13:06.4 |
HIP 5899 |
36.24 |
| 2026-08-13 00:00 |
01:16:35.86 |
-09:16:28.1 |
HIP 5899 |
33.04 |
| 2026-08-13 12:00 |
01:16:35.11 |
-09:19:51.1 |
HIP 5899 |
29.84 |
| 2026-08-14 00:00 |
01:16:34.16 |
-09:23:15.3 |
HIP 5899 |
26.65 |
| 2026-08-14 12:00 |
01:16:33.00 |
-09:26:40.8 |
HIP 5899 |
23.47 |
| 2026-08-15 00:00 |
01:16:31.63 |
-09:30:07.5 |
HIP 5899 |
20.34 |
| 2026-08-15 12:00 |
01:16:30.06 |
-09:33:35.4 |
HIP 5899 |
17.29 |
| 2026-08-16 00:00 |
01:16:28.29 |
-09:37:04.5 |
HIP 5899 |
14.38 |
| 2026-08-16 12:00 |
01:16:26.31 |
-09:40:34.8 |
HIP 5899 |
11.75 |
| 2026-08-17 00:00 |
01:16:24.12 |
-09:44:06.3 |
HIP 5899 |
9.67 |
| 2026-08-17 12:00 |
01:16:21.73 |
-09:47:38.9 |
HIP 5899 |
8.57 |
| 2026-08-18 00:00 |
01:16:19.14 |
-09:51:12.7 |
HIP 5899 |
8.86 |
| 2026-08-18 12:00 |
01:16:16.34 |
-09:54:47.5 |
HIP 5899 |
10.46 |
| 2026-08-19 00:00 |
01:16:13.34 |
-09:58:23.5 |
HIP 5899 |
12.91 |