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
$$
M_a = (3.800 + 4.919\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
3.800 |
| n |
4.919 |
| gf |
0.939 |
| gb |
-0.998 |
| k |
1.000 |
| δ90 |
9.737 |
| 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 |
06:23:11.41 |
-32:51:35.8 |
HIP 30216 |
25.56 |
| 2026-03-26 12:00 |
06:23:11.89 |
-32:50:47.7 |
HIP 30216 |
26.05 |
| 2026-03-27 00:00 |
06:23:12.41 |
-32:49:59.6 |
HIP 30216 |
26.57 |
| 2026-03-27 12:00 |
06:23:12.98 |
-32:49:11.6 |
HIP 30216 |
27.11 |
| 2026-03-28 00:00 |
06:23:13.59 |
-32:48:23.6 |
HIP 30216 |
27.67 |
| 2026-03-28 12:00 |
06:23:14.24 |
-32:47:35.7 |
HIP 30216 |
28.25 |
| 2026-03-29 00:00 |
06:23:14.94 |
-32:46:47.9 |
HIP 30216 |
28.85 |
| 2026-03-29 12:00 |
06:23:15.68 |
-32:46:00.1 |
HIP 30216 |
29.46 |
| 2026-03-30 00:00 |
06:23:16.46 |
-32:45:12.3 |
HIP 30216 |
30.09 |
| 2026-03-30 12:00 |
06:23:17.28 |
-32:44:24.7 |
HIP 30216 |
30.73 |
| 2026-03-31 00:00 |
06:23:18.15 |
-32:43:37.1 |
HIP 30216 |
31.39 |
| 2026-03-31 12:00 |
06:23:19.05 |
-32:42:49.5 |
HIP 30216 |
32.06 |
| 2026-04-01 00:00 |
06:23:20.00 |
-32:42:02.1 |
HIP 30216 |
32.74 |
| 2026-04-01 12:00 |
06:23:20.99 |
-32:41:14.7 |
HIP 30216 |
33.43 |
| 2026-04-02 00:00 |
06:23:22.03 |
-32:40:27.4 |
HIP 30216 |
34.14 |
| 2026-04-02 12:00 |
06:23:23.10 |
-32:39:40.2 |
HIP 30216 |
34.85 |
| 2026-04-03 00:00 |
06:23:24.22 |
-32:38:53.1 |
HIP 30216 |
35.58 |
| 2026-04-03 12:00 |
06:23:25.38 |
-32:38:06.0 |
HIP 30514 |
35.69 |
| 2026-04-04 00:00 |
06:23:26.58 |
-32:37:19.1 |
HIP 30514 |
34.89 |
| 2026-04-04 12:00 |
06:23:27.82 |
-32:36:32.3 |
HIP 30514 |
34.08 |
| 2026-04-05 00:00 |
06:23:29.10 |
-32:35:45.5 |
HIP 30514 |
33.28 |
| 2026-04-05 12:00 |
06:23:30.42 |
-32:34:58.9 |
HIP 30514 |
32.47 |
| 2026-04-06 00:00 |
06:23:31.78 |
-32:34:12.4 |
HIP 30514 |
31.66 |
| 2026-04-06 12:00 |
06:23:33.19 |
-32:33:26.0 |
HIP 30514 |
30.85 |
| 2026-04-07 00:00 |
06:23:34.63 |
-32:32:39.7 |
HIP 30514 |
30.04 |
| 2026-04-07 12:00 |
06:23:36.12 |
-32:31:53.5 |
HIP 30514 |
29.22 |
| 2026-04-08 00:00 |
06:23:37.65 |
-32:31:07.5 |
HIP 30514 |
28.40 |
| 2026-04-08 12:00 |
06:23:39.21 |
-32:30:21.5 |
HIP 30514 |
27.58 |
| 2026-04-09 00:00 |
06:23:40.82 |
-32:29:35.8 |
HIP 30514 |
26.76 |
| 2026-04-09 12:00 |
06:23:42.47 |
-32:28:50.1 |
HIP 30514 |
25.93 |
| 2026-04-10 00:00 |
06:23:44.16 |
-32:28:04.6 |
HIP 30514 |
25.11 |
| 2026-04-10 12:00 |
06:23:45.89 |
-32:27:19.2 |
HIP 30514 |
24.28 |
| 2026-04-11 00:00 |
06:23:47.65 |
-32:26:34.0 |
HIP 30514 |
23.45 |
| 2026-04-11 12:00 |
06:23:49.46 |
-32:25:48.9 |
HIP 30514 |
22.61 |
| 2026-04-12 00:00 |
06:23:51.31 |
-32:25:03.9 |
HIP 30514 |
21.78 |
| 2026-04-12 12:00 |
06:23:53.20 |
-32:24:19.2 |
HIP 30514 |
20.94 |
| 2026-04-13 00:00 |
06:23:55.12 |
-32:23:34.5 |
HIP 30514 |
20.10 |
| 2026-04-13 12:00 |
06:23:57.09 |
-32:22:50.1 |
HIP 30514 |
19.25 |
| 2026-04-14 00:00 |
06:23:59.09 |
-32:22:05.8 |
HIP 30514 |
18.41 |
| 2026-04-14 12:00 |
06:24:01.14 |
-32:21:21.6 |
HIP 30514 |
17.56 |
| 2026-04-15 00:00 |
06:24:03.22 |
-32:20:37.7 |
HIP 30514 |
16.71 |
| 2026-04-15 12:00 |
06:24:05.34 |
-32:19:53.9 |
HIP 30514 |
15.86 |
| 2026-04-16 00:00 |
06:24:07.50 |
-32:19:10.3 |
HIP 30514 |
15.01 |