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) |
| 2026-09-20 00:00 |
01:06:29.15 |
-14:09:37.9 |
HIP 5191 |
8.17 |
| 2026-09-20 12:00 |
01:06:14.83 |
-14:13:33.3 |
HIP 5191 |
5.02 |
| 2026-09-21 00:00 |
01:06:00.40 |
-14:17:28.1 |
HIP 5191 |
6.23 |
| 2026-09-21 12:00 |
01:05:45.86 |
-14:21:22.1 |
HIP 5191 |
10.39 |
| 2026-09-22 00:00 |
01:05:31.21 |
-14:25:15.4 |
HIP 5191 |
15.26 |
| 2026-09-22 12:00 |
01:05:16.45 |
-14:29:07.8 |
HIP 5011 |
16.97 |
| 2026-09-23 00:00 |
01:05:01.58 |
-14:32:59.5 |
HIP 5011 |
12.43 |
| 2026-09-23 12:00 |
01:04:46.62 |
-14:36:50.3 |
HIP 5011 |
8.72 |
| 2026-09-24 00:00 |
01:04:31.56 |
-14:40:40.3 |
HIP 5011 |
7.29 |
| 2026-09-24 12:00 |
01:04:16.40 |
-14:44:29.3 |
HIP 5011 |
9.26 |
| 2026-09-25 00:00 |
01:04:01.15 |
-14:48:17.4 |
HIP 5011 |
13.20 |
| 2026-09-25 12:00 |
01:03:45.81 |
-14:52:04.5 |
HIP 5011 |
17.84 |
| 2026-09-26 00:00 |
01:03:30.38 |
-14:55:50.6 |
HIP 5011 |
22.77 |
| 2026-09-26 12:00 |
01:03:14.87 |
-14:59:35.7 |
HIP 4814 |
21.30 |
| 2026-09-27 00:00 |
01:02:59.28 |
-15:03:19.8 |
HIP 4814 |
18.29 |
| 2026-09-27 12:00 |
01:02:43.60 |
-15:07:02.7 |
HIP 4814 |
16.46 |
| 2026-09-28 00:00 |
01:02:27.86 |
-15:10:44.6 |
HIP 4814 |
16.21 |
| 2026-09-28 12:00 |
01:02:12.03 |
-15:14:25.2 |
HIP 4814 |
17.61 |
| 2026-09-29 00:00 |
01:01:56.14 |
-15:18:04.8 |
HIP 4814 |
20.32 |
| 2026-09-29 12:00 |
01:01:40.18 |
-15:21:43.1 |
HIP 4814 |
23.89 |
| 2026-09-30 00:00 |
01:01:24.16 |
-15:25:20.1 |
HIP 4814 |
28.00 |
| 2026-09-30 12:00 |
01:01:08.07 |
-15:28:55.9 |
HIP 4725 |
29.30 |
| 2026-10-01 00:00 |
01:00:51.93 |
-15:32:30.5 |
HIP 4725 |
25.11 |
| 2026-10-01 12:00 |
01:00:35.73 |
-15:36:03.7 |
HIP 4725 |
21.42 |
| 2026-10-02 00:00 |
01:00:19.48 |
-15:39:35.5 |
HIP 4725 |
18.55 |
| 2026-10-02 12:00 |
01:00:03.18 |
-15:43:06.0 |
HIP 4725 |
16.91 |
| 2026-10-03 00:00 |
00:59:46.83 |
-15:46:35.0 |
HIP 4725 |
16.84 |
| 2026-10-03 12:00 |
00:59:30.44 |
-15:50:02.6 |
HIP 4725 |
18.36 |
| 2026-10-04 00:00 |
00:59:14.01 |
-15:53:28.8 |
HIP 4540 |
19.89 |
| 2026-10-04 12:00 |
00:58:57.54 |
-15:56:53.4 |
HIP 4632 |
18.68 |
| 2026-10-05 00:00 |
00:58:41.05 |
-16:00:16.6 |
HIP 4632 |
17.74 |
| 2026-10-05 12:00 |
00:58:24.52 |
-16:03:38.1 |
HIP 4632 |
18.32 |
| 2026-10-06 00:00 |
00:58:07.96 |
-16:06:58.1 |
HIP 4632 |
20.27 |
| 2026-10-06 12:00 |
00:57:51.38 |
-16:10:16.5 |
HIP 4506 |
23.13 |
| 2026-10-07 00:00 |
00:57:34.79 |
-16:13:33.3 |
HIP 4506 |
26.42 |
| 2026-10-07 12:00 |
00:57:18.17 |
-16:16:48.4 |
HIP 4356 |
21.82 |
| 2026-10-08 00:00 |
00:57:01.54 |
-16:20:01.8 |
HIP 4356 |
17.30 |
| 2026-10-08 12:00 |
00:56:44.91 |
-16:23:13.4 |
HIP 4356 |
13.23 |
| 2026-10-09 00:00 |
00:56:28.27 |
-16:26:23.4 |
HIP 4356 |
10.14 |
| 2026-10-09 12:00 |
00:56:11.62 |
-16:29:31.6 |
HIP 4356 |
9.06 |
| 2026-10-10 00:00 |
00:55:54.98 |
-16:32:37.9 |
HIP 4356 |
10.59 |
| 2026-10-10 12:00 |
00:55:38.35 |
-16:35:42.5 |
HIP 4356 |
13.88 |
| 2026-10-11 00:00 |
00:55:21.72 |
-16:38:45.2 |
HIP 4356 |
17.97 |