메타데이터
| 항목 |
값 |
| Designation |
274P/Tombaugh-Tenagra |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2013-02-23T13:58:11.107200Z |
| Orbit solution date (soln_date, UTC) |
2024-04-13T16:43:06Z |
| Obs used |
915 |
| NEO |
- |
| M1 |
10.900 |
| K1 |
14.750 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2015-12-01.0000000 |
| e |
0.43970884 |
| q (au) |
2.445176 |
| a (au) |
4.364118 |
| i (deg) |
15.832722 |
| Ω (om, deg) |
81.368553 |
| ω (w, deg) |
38.590174 |
| M (ma, deg) |
109.234659 |
밝기
산란 + 전체 선형
$$
M_a = (10.175 + 5.885\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.175 |
| n |
5.885 |
| gf |
1.000 |
| gb |
-0.893 |
| k |
1.000 |
| 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 |
19:23:30.06 |
-32:06:33.2 |
HIP 95380 |
13.77 |
| 2026-09-20 12:00 |
19:23:28.52 |
-32:06:09.3 |
HIP 95380 |
13.68 |
| 2026-09-21 00:00 |
19:23:27.17 |
-32:05:44.9 |
HIP 95380 |
13.57 |
| 2026-09-21 12:00 |
19:23:26.00 |
-32:05:20.0 |
HIP 95380 |
13.45 |
| 2026-09-22 00:00 |
19:23:25.03 |
-32:04:54.8 |
HIP 95380 |
13.31 |
| 2026-09-22 12:00 |
19:23:24.24 |
-32:04:29.1 |
HIP 95380 |
13.16 |
| 2026-09-23 00:00 |
19:23:23.64 |
-32:04:03.0 |
HIP 95380 |
12.98 |
| 2026-09-23 12:00 |
19:23:23.22 |
-32:03:36.5 |
HIP 95380 |
12.77 |
| 2026-09-24 00:00 |
19:23:23.00 |
-32:03:09.6 |
HIP 95380 |
12.55 |
| 2026-09-24 12:00 |
19:23:22.96 |
-32:02:42.2 |
HIP 95380 |
12.30 |
| 2026-09-25 00:00 |
19:23:23.11 |
-32:02:14.5 |
HIP 95380 |
12.02 |
| 2026-09-25 12:00 |
19:23:23.45 |
-32:01:46.4 |
HIP 95380 |
11.72 |
| 2026-09-26 00:00 |
19:23:23.97 |
-32:01:17.9 |
HIP 95380 |
11.40 |
| 2026-09-26 12:00 |
19:23:24.68 |
-32:00:49.0 |
HIP 95380 |
11.04 |
| 2026-09-27 00:00 |
19:23:25.57 |
-32:00:19.8 |
HIP 95380 |
10.66 |
| 2026-09-27 12:00 |
19:23:26.65 |
-31:59:50.1 |
HIP 95380 |
10.26 |
| 2026-09-28 00:00 |
19:23:27.92 |
-31:59:20.1 |
HIP 95380 |
9.82 |
| 2026-09-28 12:00 |
19:23:29.37 |
-31:58:49.7 |
HIP 95380 |
9.37 |
| 2026-09-29 00:00 |
19:23:31.00 |
-31:58:19.0 |
HIP 95380 |
8.89 |
| 2026-09-29 12:00 |
19:23:32.82 |
-31:57:47.9 |
HIP 95380 |
8.39 |
| 2026-09-30 00:00 |
19:23:34.82 |
-31:57:16.4 |
HIP 95380 |
7.87 |
| 2026-09-30 12:00 |
19:23:37.00 |
-31:56:44.6 |
HIP 95380 |
7.33 |
| 2026-10-01 00:00 |
19:23:39.37 |
-31:56:12.4 |
HIP 95380 |
6.79 |
| 2026-10-01 12:00 |
19:23:41.92 |
-31:55:39.9 |
HIP 95380 |
6.25 |
| 2026-10-02 00:00 |
19:23:44.66 |
-31:55:07.0 |
HIP 95380 |
5.72 |
| 2026-10-02 12:00 |
19:23:47.58 |
-31:54:33.8 |
HIP 95380 |
5.22 |
| 2026-10-03 00:00 |
19:23:50.67 |
-31:54:00.3 |
HIP 95380 |
4.79 |
| 2026-10-03 12:00 |
19:23:53.95 |
-31:53:26.4 |
HIP 95380 |
4.45 |
| 2026-10-04 00:00 |
19:23:57.41 |
-31:52:52.2 |
HIP 95380 |
4.25 |
| 2026-10-04 12:00 |
19:24:01.06 |
-31:52:17.6 |
HIP 95380 |
4.24 |
| 2026-10-05 00:00 |
19:24:04.88 |
-31:51:42.8 |
HIP 95380 |
4.43 |
| 2026-10-05 12:00 |
19:24:08.88 |
-31:51:07.6 |
HIP 95380 |
4.82 |
| 2026-10-06 00:00 |
19:24:13.06 |
-31:50:32.1 |
HIP 95380 |
5.40 |
| 2026-10-06 12:00 |
19:24:17.43 |
-31:49:56.3 |
HIP 95380 |
6.12 |
| 2026-10-07 00:00 |
19:24:21.97 |
-31:49:20.1 |
HIP 95420 |
6.78 |
| 2026-10-07 12:00 |
19:24:26.69 |
-31:48:43.7 |
HIP 95420 |
7.00 |
| 2026-10-08 00:00 |
19:24:31.59 |
-31:48:06.9 |
HIP 95420 |
7.40 |
| 2026-10-08 12:00 |
19:24:36.66 |
-31:47:29.9 |
HIP 95420 |
7.97 |
| 2026-10-09 00:00 |
19:24:41.91 |
-31:46:52.5 |
HIP 95420 |
8.70 |
| 2026-10-09 12:00 |
19:24:47.34 |
-31:46:14.9 |
HIP 95420 |
9.55 |
| 2026-10-10 00:00 |
19:24:52.95 |
-31:45:36.9 |
HIP 95420 |
10.52 |
| 2026-10-10 12:00 |
19:24:58.73 |
-31:44:58.7 |
HIP 95420 |
11.59 |
| 2026-10-11 00:00 |
19:25:04.68 |
-31:44:20.2 |
HIP 95420 |
12.73 |