메타데이터
| 항목 |
값 |
| Designation |
C/1900 O1 (Borrelly-Brooks) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1900-08-03T16:49:18.926400Z |
| Orbit solution date (soln_date, UTC) |
2023-10-09T20:36:15Z |
| Obs used |
121 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1900-08-15.0000000 |
| e |
1.00032171 |
| q (au) |
1.014834 |
| a (au) |
-3154.489395 |
| i (deg) |
62.532910 |
| Ω (om, deg) |
329.412543 |
| ω (w, deg) |
12.422902 |
| M (ma, deg) |
0.000063 |
밝기
산란 + 전체 선형
$$
M_a = (8.588 + 4.399\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.588 |
| n |
4.399 |
| gf |
0.801 |
| gb |
-0.500 |
| k |
0.801 |
| 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) |
| 2026-07-29 00:00 |
10:06:57.64 |
+09:11:15.3 |
HIP 49492 |
23.62 |
| 2026-07-29 12:00 |
10:06:58.35 |
+09:11:11.5 |
HIP 49492 |
23.64 |
| 2026-07-30 00:00 |
10:06:59.07 |
+09:11:07.6 |
HIP 49492 |
23.67 |
| 2026-07-30 12:00 |
10:06:59.79 |
+09:11:03.7 |
HIP 49492 |
23.69 |
| 2026-07-31 00:00 |
10:07:00.51 |
+09:10:59.8 |
HIP 49492 |
23.72 |
| 2026-07-31 12:00 |
10:07:01.24 |
+09:10:55.8 |
HIP 49492 |
23.74 |
| 2026-08-01 00:00 |
10:07:01.96 |
+09:10:51.9 |
HIP 49492 |
23.77 |
| 2026-08-01 12:00 |
10:07:02.69 |
+09:10:47.9 |
HIP 49492 |
23.80 |
| 2026-08-02 00:00 |
10:07:03.42 |
+09:10:43.9 |
HIP 49492 |
23.83 |
| 2026-08-02 12:00 |
10:07:04.16 |
+09:10:39.9 |
HIP 49492 |
23.87 |
| 2026-08-03 00:00 |
10:07:04.89 |
+09:10:35.9 |
HIP 49492 |
23.90 |
| 2026-08-03 12:00 |
10:07:05.63 |
+09:10:31.9 |
HIP 49492 |
23.94 |
| 2026-08-04 00:00 |
10:07:06.37 |
+09:10:27.8 |
HIP 49492 |
23.98 |
| 2026-08-04 12:00 |
10:07:07.11 |
+09:10:23.7 |
HIP 49492 |
24.01 |
| 2026-08-05 00:00 |
10:07:07.86 |
+09:10:19.6 |
HIP 49492 |
24.06 |
| 2026-08-05 12:00 |
10:07:08.60 |
+09:10:15.5 |
HIP 49492 |
24.10 |
| 2026-08-06 00:00 |
10:07:09.35 |
+09:10:11.4 |
HIP 49562 |
24.03 |
| 2026-08-06 12:00 |
10:07:10.10 |
+09:10:07.3 |
HIP 49562 |
23.97 |
| 2026-08-07 00:00 |
10:07:10.85 |
+09:10:03.2 |
HIP 49562 |
23.90 |
| 2026-08-07 12:00 |
10:07:11.60 |
+09:09:59.0 |
HIP 49562 |
23.84 |
| 2026-08-08 00:00 |
10:07:12.36 |
+09:09:54.8 |
HIP 49562 |
23.78 |
| 2026-08-08 12:00 |
10:07:13.11 |
+09:09:50.6 |
HIP 49562 |
23.72 |
| 2026-08-09 00:00 |
10:07:13.87 |
+09:09:46.4 |
HIP 49562 |
23.66 |
| 2026-08-09 12:00 |
10:07:14.63 |
+09:09:42.2 |
HIP 49562 |
23.60 |
| 2026-08-10 00:00 |
10:07:15.39 |
+09:09:38.0 |
HIP 49562 |
23.55 |
| 2026-08-10 12:00 |
10:07:16.16 |
+09:09:33.8 |
HIP 49562 |
23.49 |
| 2026-08-11 00:00 |
10:07:16.92 |
+09:09:29.5 |
HIP 49562 |
23.44 |
| 2026-08-11 12:00 |
10:07:17.69 |
+09:09:25.3 |
HIP 49562 |
23.39 |
| 2026-08-12 00:00 |
10:07:18.45 |
+09:09:21.0 |
HIP 49562 |
23.34 |
| 2026-08-12 12:00 |
10:07:19.22 |
+09:09:16.7 |
HIP 49562 |
23.29 |
| 2026-08-13 00:00 |
10:07:19.99 |
+09:09:12.4 |
HIP 49562 |
23.24 |
| 2026-08-13 12:00 |
10:07:20.76 |
+09:09:08.1 |
HIP 49562 |
23.20 |
| 2026-08-14 00:00 |
10:07:21.53 |
+09:09:03.8 |
HIP 49562 |
23.15 |
| 2026-08-14 12:00 |
10:07:22.30 |
+09:08:59.5 |
HIP 49562 |
23.11 |
| 2026-08-15 00:00 |
10:07:23.08 |
+09:08:55.1 |
HIP 49562 |
23.07 |
| 2026-08-15 12:00 |
10:07:23.85 |
+09:08:50.8 |
HIP 49562 |
23.03 |
| 2026-08-16 00:00 |
10:07:24.63 |
+09:08:46.4 |
HIP 49562 |
22.99 |
| 2026-08-16 12:00 |
10:07:25.40 |
+09:08:42.1 |
HIP 49562 |
22.96 |
| 2026-08-17 00:00 |
10:07:26.18 |
+09:08:37.7 |
HIP 49562 |
22.92 |
| 2026-08-17 12:00 |
10:07:26.95 |
+09:08:33.3 |
HIP 49562 |
22.89 |
| 2026-08-18 00:00 |
10:07:27.73 |
+09:08:28.9 |
HIP 49562 |
22.86 |
| 2026-08-18 12:00 |
10:07:28.51 |
+09:08:24.5 |
HIP 49562 |
22.83 |
| 2026-08-19 00:00 |
10:07:29.29 |
+09:08:20.1 |
HIP 49562 |
22.80 |