메타데이터
| 항목 |
값 |
| Designation |
P/2007 Q2 (Gilmore) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2007-08-23T21:08:36.447360Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:11Z |
| Obs used |
146 |
| NEO |
- |
| M1 |
16.700 |
| K1 |
10.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2007-09-13.0000000 |
| e |
0.67122948 |
| q (au) |
1.839016 |
| a (au) |
5.593616 |
| i (deg) |
10.238439 |
| Ω (om, deg) |
172.248957 |
| ω (w, deg) |
163.150307 |
| M (ma, deg) |
1.498898 |
밝기
산란 + 전체 선형
$$
M_a = (16.814 + 3.468\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
16.814 |
| n |
3.468 |
| gf |
0.979 |
| gb |
-1.000 |
| k |
1.000 |
| δ90 |
1.000 |
| 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 |
09:26:23.54 |
+09:43:45.1 |
HIP 46197 |
23.61 |
| 2026-03-26 12:00 |
09:26:16.74 |
+09:44:38.3 |
HIP 46197 |
22.95 |
| 2026-03-27 00:00 |
09:26:10.04 |
+09:45:31.2 |
HIP 46197 |
22.44 |
| 2026-03-27 12:00 |
09:26:03.43 |
+09:46:23.6 |
HIP 46197 |
22.08 |
| 2026-03-28 00:00 |
09:25:56.91 |
+09:47:15.6 |
HIP 46197 |
21.88 |
| 2026-03-28 12:00 |
09:25:50.50 |
+09:48:07.3 |
HIP 46197 |
21.84 |
| 2026-03-29 00:00 |
09:25:44.18 |
+09:48:58.6 |
HIP 46197 |
21.95 |
| 2026-03-29 12:00 |
09:25:37.95 |
+09:49:49.4 |
HIP 46160 |
21.91 |
| 2026-03-30 00:00 |
09:25:31.83 |
+09:50:39.9 |
HIP 46160 |
21.86 |
| 2026-03-30 12:00 |
09:25:25.80 |
+09:51:29.9 |
HIP 46160 |
21.94 |
| 2026-03-31 00:00 |
09:25:19.87 |
+09:52:19.5 |
HIP 46160 |
22.16 |
| 2026-03-31 12:00 |
09:25:14.04 |
+09:53:08.8 |
HIP 46160 |
22.50 |
| 2026-04-01 00:00 |
09:25:08.31 |
+09:53:57.6 |
HIP 46160 |
22.95 |
| 2026-04-01 12:00 |
09:25:02.68 |
+09:54:45.9 |
HIP 46160 |
23.51 |
| 2026-04-02 00:00 |
09:24:57.14 |
+09:55:33.9 |
HIP 46160 |
24.15 |
| 2026-04-02 12:00 |
09:24:51.71 |
+09:56:21.4 |
HIP 46160 |
24.87 |
| 2026-04-03 00:00 |
09:24:46.38 |
+09:57:08.5 |
HIP 46160 |
25.66 |
| 2026-04-03 12:00 |
09:24:41.15 |
+09:57:55.2 |
HIP 46160 |
26.50 |
| 2026-04-04 00:00 |
09:24:36.03 |
+09:58:41.4 |
HIP 46189 |
27.01 |
| 2026-04-04 12:00 |
09:24:31.00 |
+09:59:27.2 |
HIP 46189 |
26.60 |
| 2026-04-05 00:00 |
09:24:26.08 |
+10:00:12.6 |
HIP 46189 |
26.26 |
| 2026-04-05 12:00 |
09:24:21.26 |
+10:00:57.5 |
HIP 46189 |
25.99 |
| 2026-04-06 00:00 |
09:24:16.54 |
+10:01:42.0 |
HIP 46189 |
25.80 |
| 2026-04-06 12:00 |
09:24:11.92 |
+10:02:26.0 |
HIP 46189 |
25.67 |
| 2026-04-07 00:00 |
09:24:07.41 |
+10:03:09.5 |
HIP 46189 |
25.60 |
| 2026-04-07 12:00 |
09:24:03.01 |
+10:03:52.6 |
HIP 46189 |
25.59 |
| 2026-04-08 00:00 |
09:23:58.70 |
+10:04:35.3 |
HIP 46189 |
25.64 |
| 2026-04-08 12:00 |
09:23:54.50 |
+10:05:17.5 |
HIP 46189 |
25.75 |
| 2026-04-09 00:00 |
09:23:50.41 |
+10:05:59.2 |
HIP 46189 |
25.90 |
| 2026-04-09 12:00 |
09:23:46.42 |
+10:06:40.5 |
HIP 46189 |
26.09 |
| 2026-04-10 00:00 |
09:23:42.54 |
+10:07:21.2 |
HIP 46106 |
26.30 |
| 2026-04-10 12:00 |
09:23:38.77 |
+10:08:01.6 |
HIP 46106 |
25.90 |
| 2026-04-11 00:00 |
09:23:35.09 |
+10:08:41.4 |
HIP 46106 |
25.55 |
| 2026-04-11 12:00 |
09:23:31.53 |
+10:09:20.8 |
HIP 46106 |
25.24 |
| 2026-04-12 00:00 |
09:23:28.07 |
+10:09:59.7 |
HIP 46106 |
24.97 |
| 2026-04-12 12:00 |
09:23:24.72 |
+10:10:38.1 |
HIP 46106 |
24.75 |
| 2026-04-13 00:00 |
09:23:21.48 |
+10:11:16.0 |
HIP 46106 |
24.55 |
| 2026-04-13 12:00 |
09:23:18.34 |
+10:11:53.4 |
HIP 46106 |
24.39 |
| 2026-04-14 00:00 |
09:23:15.31 |
+10:12:30.4 |
HIP 46106 |
24.27 |
| 2026-04-14 12:00 |
09:23:12.39 |
+10:13:06.8 |
HIP 46106 |
24.17 |
| 2026-04-15 00:00 |
09:23:09.58 |
+10:13:42.8 |
HIP 46106 |
24.10 |
| 2026-04-15 12:00 |
09:23:06.87 |
+10:14:18.3 |
HIP 46106 |
24.05 |
| 2026-04-16 00:00 |
09:23:04.27 |
+10:14:53.2 |
HIP 46106 |
24.03 |