메타데이터
| 항목 |
값 |
| Designation |
C/2009 S3 (Lemmon) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2011-12-11T06:01:00.886080Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:34Z |
| Obs used |
278 |
| NEO |
- |
| M1 |
11.700 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2011-11-26.0000000 |
| e |
1.00141917 |
| q (au) |
6.474515 |
| a (au) |
-4562.197370 |
| i (deg) |
60.384601 |
| Ω (om, deg) |
225.132530 |
| ω (w, deg) |
129.760860 |
| M (ma, deg) |
-0.000049 |
밝기
산란 + 전체 선형
$$
M_a = (3.843 + 4.920\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
3.843 |
| n |
4.920 |
| gf |
0.872 |
| gb |
-0.998 |
| k |
1.000 |
| δ90 |
7.536 |
| 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 |
06:45:17.29 |
-33:01:08.0 |
HIP 32405 |
15.93 |
| 2026-09-20 12:00 |
06:45:18.82 |
-33:02:02.2 |
HIP 32405 |
16.56 |
| 2026-09-21 00:00 |
06:45:20.31 |
-33:02:56.4 |
HIP 32405 |
17.24 |
| 2026-09-21 12:00 |
06:45:21.76 |
-33:03:50.8 |
HIP 32405 |
17.94 |
| 2026-09-22 00:00 |
06:45:23.17 |
-33:04:45.2 |
HIP 32405 |
18.67 |
| 2026-09-22 12:00 |
06:45:24.54 |
-33:05:39.6 |
HIP 32405 |
19.42 |
| 2026-09-23 00:00 |
06:45:25.87 |
-33:06:34.2 |
HIP 32405 |
20.19 |
| 2026-09-23 12:00 |
06:45:27.17 |
-33:07:28.8 |
HIP 32405 |
20.98 |
| 2026-09-24 00:00 |
06:45:28.42 |
-33:08:23.5 |
HIP 32405 |
21.79 |
| 2026-09-24 12:00 |
06:45:29.63 |
-33:09:18.2 |
HIP 32405 |
22.61 |
| 2026-09-25 00:00 |
06:45:30.80 |
-33:10:13.0 |
HIP 32405 |
23.45 |
| 2026-09-25 12:00 |
06:45:31.93 |
-33:11:07.8 |
HIP 32405 |
24.29 |
| 2026-09-26 00:00 |
06:45:33.02 |
-33:12:02.7 |
HIP 32405 |
25.14 |
| 2026-09-26 12:00 |
06:45:34.07 |
-33:12:57.7 |
HIP 32405 |
26.01 |
| 2026-09-27 00:00 |
06:45:35.07 |
-33:13:52.6 |
HIP 32405 |
26.88 |
| 2026-09-27 12:00 |
06:45:36.04 |
-33:14:47.7 |
HIP 32405 |
27.75 |
| 2026-09-28 00:00 |
06:45:36.97 |
-33:15:42.7 |
HIP 32550 |
27.82 |
| 2026-09-28 12:00 |
06:45:37.86 |
-33:16:37.8 |
HIP 32550 |
27.17 |
| 2026-09-29 00:00 |
06:45:38.70 |
-33:17:32.9 |
HIP 32479 |
26.32 |
| 2026-09-29 12:00 |
06:45:39.51 |
-33:18:28.1 |
HIP 32479 |
25.44 |
| 2026-09-30 00:00 |
06:45:40.27 |
-33:19:23.2 |
HIP 32479 |
24.58 |
| 2026-09-30 12:00 |
06:45:40.99 |
-33:20:18.4 |
HIP 32479 |
23.72 |
| 2026-10-01 00:00 |
06:45:41.67 |
-33:21:13.6 |
HIP 32479 |
22.88 |
| 2026-10-01 12:00 |
06:45:42.31 |
-33:22:08.9 |
HIP 32479 |
22.05 |
| 2026-10-02 00:00 |
06:45:42.91 |
-33:23:04.1 |
HIP 32479 |
21.23 |
| 2026-10-02 12:00 |
06:45:43.47 |
-33:23:59.3 |
HIP 32479 |
20.42 |
| 2026-10-03 00:00 |
06:45:43.98 |
-33:24:54.6 |
HIP 32479 |
19.63 |
| 2026-10-03 12:00 |
06:45:44.45 |
-33:25:49.8 |
HIP 32479 |
18.86 |
| 2026-10-04 00:00 |
06:45:44.89 |
-33:26:45.0 |
HIP 32479 |
18.11 |
| 2026-10-04 12:00 |
06:45:45.27 |
-33:27:40.2 |
HIP 32479 |
17.39 |
| 2026-10-05 00:00 |
06:45:45.62 |
-33:28:35.4 |
HIP 32479 |
16.69 |
| 2026-10-05 12:00 |
06:45:45.93 |
-33:29:30.6 |
HIP 32479 |
16.02 |
| 2026-10-06 00:00 |
06:45:46.19 |
-33:30:25.8 |
HIP 32479 |
15.38 |
| 2026-10-06 12:00 |
06:45:46.41 |
-33:31:20.9 |
HIP 32479 |
14.78 |
| 2026-10-07 00:00 |
06:45:46.59 |
-33:32:16.1 |
HIP 32479 |
14.22 |
| 2026-10-07 12:00 |
06:45:46.73 |
-33:33:11.1 |
HIP 32479 |
13.71 |
| 2026-10-08 00:00 |
06:45:46.82 |
-33:34:06.2 |
HIP 32479 |
13.25 |
| 2026-10-08 12:00 |
06:45:46.88 |
-33:35:01.2 |
HIP 32479 |
12.84 |
| 2026-10-09 00:00 |
06:45:46.89 |
-33:35:56.1 |
HIP 32479 |
12.50 |
| 2026-10-09 12:00 |
06:45:46.85 |
-33:36:51.1 |
HIP 32479 |
12.23 |
| 2026-10-10 00:00 |
06:45:46.78 |
-33:37:45.9 |
HIP 32479 |
12.03 |
| 2026-10-10 12:00 |
06:45:46.66 |
-33:38:40.7 |
HIP 32479 |
11.91 |
| 2026-10-11 00:00 |
06:45:46.50 |
-33:39:35.4 |
HIP 32479 |
11.87 |