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) |
| 2026-03-26 00:00 |
20:01:46.80 |
-27:37:16.1 |
HIP 98688 |
12.82 |
| 2026-03-26 12:00 |
20:02:00.99 |
-27:37:27.3 |
HIP 98688 |
9.95 |
| 2026-03-27 00:00 |
20:02:15.04 |
-27:37:38.9 |
HIP 98688 |
7.33 |
| 2026-03-27 12:00 |
20:02:28.97 |
-27:37:51.0 |
HIP 98688 |
5.28 |
| 2026-03-28 00:00 |
20:02:42.78 |
-27:38:03.7 |
HIP 98688 |
4.59 |
| 2026-03-28 12:00 |
20:02:56.45 |
-27:38:16.8 |
HIP 98688 |
5.72 |
| 2026-03-29 00:00 |
20:03:09.99 |
-27:38:30.4 |
HIP 98688 |
7.90 |
| 2026-03-29 12:00 |
20:03:23.40 |
-27:38:44.5 |
HIP 98688 |
10.46 |
| 2026-03-30 00:00 |
20:03:36.68 |
-27:38:59.1 |
HIP 98849 |
12.31 |
| 2026-03-30 12:00 |
20:03:49.83 |
-27:39:14.2 |
HIP 98849 |
9.70 |
| 2026-03-31 00:00 |
20:04:02.85 |
-27:39:29.8 |
HIP 98849 |
7.34 |
| 2026-03-31 12:00 |
20:04:15.73 |
-27:39:45.9 |
HIP 98849 |
5.53 |
| 2026-04-01 00:00 |
20:04:28.48 |
-27:40:02.5 |
HIP 98849 |
4.85 |
| 2026-04-01 12:00 |
20:04:41.09 |
-27:40:19.7 |
HIP 98849 |
5.68 |
| 2026-04-02 00:00 |
20:04:53.57 |
-27:40:37.3 |
HIP 98849 |
7.50 |
| 2026-04-02 12:00 |
20:05:05.91 |
-27:40:55.5 |
HIP 98933 |
8.19 |
| 2026-04-03 00:00 |
20:05:18.12 |
-27:41:14.2 |
HIP 98933 |
7.46 |
| 2026-04-03 12:00 |
20:05:30.19 |
-27:41:33.4 |
HIP 98933 |
7.66 |
| 2026-04-04 00:00 |
20:05:42.12 |
-27:41:53.2 |
HIP 98933 |
8.70 |
| 2026-04-04 12:00 |
20:05:53.91 |
-27:42:13.5 |
HIP 98933 |
10.30 |
| 2026-04-05 00:00 |
20:06:05.56 |
-27:42:34.3 |
HIP 98933 |
12.24 |
| 2026-04-05 12:00 |
20:06:17.07 |
-27:42:55.7 |
HIP 98933 |
14.35 |
| 2026-04-06 00:00 |
20:06:28.44 |
-27:43:17.6 |
HIP 98933 |
16.56 |
| 2026-04-06 12:00 |
20:06:39.67 |
-27:43:40.1 |
HIP 98933 |
18.82 |
| 2026-04-07 00:00 |
20:06:50.75 |
-27:44:03.1 |
HIP 98933 |
21.11 |
| 2026-04-07 12:00 |
20:07:01.69 |
-27:44:26.6 |
HIP 98933 |
23.40 |
| 2026-04-08 00:00 |
20:07:12.49 |
-27:44:50.8 |
HIP 98933 |
25.69 |
| 2026-04-08 12:00 |
20:07:23.14 |
-27:45:15.4 |
HIP 98933 |
27.97 |
| 2026-04-09 00:00 |
20:07:33.65 |
-27:45:40.7 |
HIP 99290 |
26.31 |
| 2026-04-09 12:00 |
20:07:44.01 |
-27:46:06.5 |
HIP 99290 |
24.08 |
| 2026-04-10 00:00 |
20:07:54.22 |
-27:46:32.8 |
HIP 99290 |
21.89 |
| 2026-04-10 12:00 |
20:08:04.29 |
-27:46:59.7 |
HIP 99290 |
19.74 |
| 2026-04-11 00:00 |
20:08:14.20 |
-27:47:27.2 |
HIP 99290 |
17.65 |
| 2026-04-11 12:00 |
20:08:23.97 |
-27:47:55.3 |
HIP 99290 |
15.62 |
| 2026-04-12 00:00 |
20:08:33.58 |
-27:48:24.0 |
HIP 99290 |
13.67 |
| 2026-04-12 12:00 |
20:08:43.05 |
-27:48:53.2 |
HIP 99290 |
11.81 |
| 2026-04-13 00:00 |
20:08:52.36 |
-27:49:23.0 |
HIP 99290 |
10.08 |
| 2026-04-13 12:00 |
20:09:01.52 |
-27:49:53.4 |
HIP 99290 |
8.53 |
| 2026-04-14 00:00 |
20:09:10.52 |
-27:50:24.4 |
HIP 99290 |
7.26 |
| 2026-04-14 12:00 |
20:09:19.37 |
-27:50:55.9 |
HIP 99290 |
6.41 |
| 2026-04-15 00:00 |
20:09:28.07 |
-27:51:28.1 |
HIP 99290 |
6.11 |
| 2026-04-15 12:00 |
20:09:36.61 |
-27:52:00.8 |
HIP 99290 |
6.42 |
| 2026-04-16 00:00 |
20:09:44.99 |
-27:52:34.2 |
HIP 99290 |
7.23 |