메타데이터
| 항목 |
값 |
| Designation |
C/1996 R1 (Hergenrother-Spahr) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1996-08-28T17:45:00.472320Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:49Z |
| Obs used |
321 |
| NEO |
- |
| M1 |
6.300 |
| K1 |
24.250 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1996-09-28.0000000 |
| e |
0.98558370 |
| q (au) |
1.899198 |
| a (au) |
131.739702 |
| i (deg) |
145.814443 |
| Ω (om, deg) |
149.745053 |
| ω (w, deg) |
139.456909 |
| M (ma, deg) |
0.019724 |
밝기
산란 + 전체 선형
$$
M_a = (8.178 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.178 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.991 |
| 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 |
12:45:05.52 |
-37:37:17.7 |
HIP 62254 |
11.25 |
| 2026-03-26 12:00 |
12:45:02.64 |
-37:37:07.5 |
HIP 62254 |
11.34 |
| 2026-03-27 00:00 |
12:44:59.76 |
-37:36:57.1 |
HIP 62254 |
11.45 |
| 2026-03-27 12:00 |
12:44:56.87 |
-37:36:46.6 |
HIP 62254 |
11.59 |
| 2026-03-28 00:00 |
12:44:53.98 |
-37:36:35.8 |
HIP 62254 |
11.76 |
| 2026-03-28 12:00 |
12:44:51.09 |
-37:36:24.9 |
HIP 62254 |
11.95 |
| 2026-03-29 00:00 |
12:44:48.20 |
-37:36:13.8 |
HIP 62254 |
12.17 |
| 2026-03-29 12:00 |
12:44:45.31 |
-37:36:02.5 |
HIP 62254 |
12.41 |
| 2026-03-30 00:00 |
12:44:42.42 |
-37:35:51.1 |
HIP 62254 |
12.67 |
| 2026-03-30 12:00 |
12:44:39.52 |
-37:35:39.4 |
HIP 62254 |
12.95 |
| 2026-03-31 00:00 |
12:44:36.63 |
-37:35:27.6 |
HIP 62107 |
12.68 |
| 2026-03-31 12:00 |
12:44:33.73 |
-37:35:15.6 |
HIP 62107 |
12.32 |
| 2026-04-01 00:00 |
12:44:30.83 |
-37:35:03.5 |
HIP 62107 |
11.99 |
| 2026-04-01 12:00 |
12:44:27.93 |
-37:34:51.1 |
HIP 62107 |
11.68 |
| 2026-04-02 00:00 |
12:44:25.04 |
-37:34:38.6 |
HIP 62107 |
11.39 |
| 2026-04-02 12:00 |
12:44:22.14 |
-37:34:25.9 |
HIP 62107 |
11.13 |
| 2026-04-03 00:00 |
12:44:19.24 |
-37:34:13.1 |
HIP 62107 |
10.90 |
| 2026-04-03 12:00 |
12:44:16.35 |
-37:34:00.0 |
HIP 62107 |
10.71 |
| 2026-04-04 00:00 |
12:44:13.45 |
-37:33:46.8 |
HIP 62107 |
10.55 |
| 2026-04-04 12:00 |
12:44:10.56 |
-37:33:33.4 |
HIP 62107 |
10.42 |
| 2026-04-05 00:00 |
12:44:07.66 |
-37:33:19.9 |
HIP 62107 |
10.33 |
| 2026-04-05 12:00 |
12:44:04.77 |
-37:33:06.2 |
HIP 62107 |
10.29 |
| 2026-04-06 00:00 |
12:44:01.88 |
-37:32:52.3 |
HIP 62107 |
10.28 |
| 2026-04-06 12:00 |
12:43:58.99 |
-37:32:38.3 |
HIP 62107 |
10.31 |
| 2026-04-07 00:00 |
12:43:56.11 |
-37:32:24.0 |
HIP 62107 |
10.38 |
| 2026-04-07 12:00 |
12:43:53.22 |
-37:32:09.7 |
HIP 62107 |
10.49 |
| 2026-04-08 00:00 |
12:43:50.34 |
-37:31:55.1 |
HIP 62107 |
10.63 |
| 2026-04-08 12:00 |
12:43:47.46 |
-37:31:40.4 |
HIP 62107 |
10.82 |
| 2026-04-09 00:00 |
12:43:44.59 |
-37:31:25.6 |
HIP 62107 |
11.04 |
| 2026-04-09 12:00 |
12:43:41.71 |
-37:31:10.5 |
HIP 62107 |
11.29 |
| 2026-04-10 00:00 |
12:43:38.84 |
-37:30:55.4 |
HIP 62107 |
11.57 |
| 2026-04-10 12:00 |
12:43:35.98 |
-37:30:40.0 |
HIP 62107 |
11.88 |
| 2026-04-11 00:00 |
12:43:33.11 |
-37:30:24.5 |
HIP 62107 |
12.21 |
| 2026-04-11 12:00 |
12:43:30.26 |
-37:30:08.9 |
HIP 62107 |
12.57 |
| 2026-04-12 00:00 |
12:43:27.40 |
-37:29:53.1 |
HIP 62107 |
12.96 |
| 2026-04-12 12:00 |
12:43:24.55 |
-37:29:37.1 |
HIP 62107 |
13.36 |
| 2026-04-13 00:00 |
12:43:21.71 |
-37:29:21.0 |
HIP 62107 |
13.78 |
| 2026-04-13 12:00 |
12:43:18.87 |
-37:29:04.7 |
HIP 62107 |
14.22 |
| 2026-04-14 00:00 |
12:43:16.04 |
-37:28:48.3 |
HIP 62107 |
14.67 |
| 2026-04-14 12:00 |
12:43:13.21 |
-37:28:31.8 |
HIP 62107 |
15.14 |
| 2026-04-15 00:00 |
12:43:10.38 |
-37:28:15.1 |
HIP 62107 |
15.62 |
| 2026-04-15 12:00 |
12:43:07.56 |
-37:27:58.2 |
HIP 62107 |
16.12 |
| 2026-04-16 00:00 |
12:43:04.75 |
-37:27:41.2 |
HIP 62107 |
16.62 |