메타데이터
| 항목 |
값 |
| Designation |
C/2014 Q3 (Borisov) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2014-11-19T01:37:12.034560Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:59Z |
| Obs used |
766 |
| NEO |
- |
| M1 |
8.800 |
| K1 |
22.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2014-10-19.0000000 |
| e |
0.94206319 |
| q (au) |
1.647407 |
| a (au) |
28.434555 |
| i (deg) |
89.948878 |
| Ω (om, deg) |
63.129517 |
| ω (w, deg) |
47.380883 |
| M (ma, deg) |
359.798051 |
밝기
산란 + 전체 선형
$$
M_a = (13.028 + 2.018\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.028 |
| n |
2.018 |
| gf |
1.000 |
| gb |
-0.500 |
| k |
1.000 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2014-08-22 |
2014-11-18 |
+16.4094 |
-4.762 |
| 2014-11-19 |
2015-03-24 |
+26.2508 |
-7.298 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
15:35:31.49 |
-45:33:30.0 |
HIP 76281 |
8.74 |
| 2026-06-01 12:00 |
15:35:24.55 |
-45:33:11.8 |
HIP 76281 |
8.02 |
| 2026-06-02 00:00 |
15:35:17.63 |
-45:32:53.4 |
HIP 76281 |
7.44 |
| 2026-06-02 12:00 |
15:35:10.73 |
-45:32:34.7 |
HIP 76281 |
7.04 |
| 2026-06-03 00:00 |
15:35:03.84 |
-45:32:15.7 |
HIP 76281 |
6.86 |
| 2026-06-03 12:00 |
15:34:56.98 |
-45:31:56.5 |
HIP 76281 |
6.90 |
| 2026-06-04 00:00 |
15:34:50.13 |
-45:31:37.1 |
HIP 76281 |
7.17 |
| 2026-06-04 12:00 |
15:34:43.31 |
-45:31:17.4 |
HIP 76281 |
7.64 |
| 2026-06-05 00:00 |
15:34:36.51 |
-45:30:57.4 |
HIP 76281 |
8.26 |
| 2026-06-05 12:00 |
15:34:29.72 |
-45:30:37.2 |
HIP 76281 |
9.02 |
| 2026-06-06 00:00 |
15:34:22.96 |
-45:30:16.8 |
HIP 76281 |
9.88 |
| 2026-06-06 12:00 |
15:34:16.22 |
-45:29:56.1 |
HIP 76281 |
10.81 |
| 2026-06-07 00:00 |
15:34:09.51 |
-45:29:35.1 |
HIP 76281 |
11.79 |
| 2026-06-07 12:00 |
15:34:02.81 |
-45:29:14.0 |
HIP 76281 |
12.82 |
| 2026-06-08 00:00 |
15:33:56.15 |
-45:28:52.6 |
HIP 76281 |
13.88 |
| 2026-06-08 12:00 |
15:33:49.50 |
-45:28:30.9 |
HIP 76281 |
14.96 |
| 2026-06-09 00:00 |
15:33:42.88 |
-45:28:09.0 |
HIP 76281 |
16.07 |
| 2026-06-09 12:00 |
15:33:36.29 |
-45:27:46.9 |
HIP 76281 |
17.18 |
| 2026-06-10 00:00 |
15:33:29.72 |
-45:27:24.6 |
HIP 76281 |
18.31 |
| 2026-06-10 12:00 |
15:33:23.18 |
-45:27:02.0 |
HIP 76281 |
19.45 |
| 2026-06-11 00:00 |
15:33:16.67 |
-45:26:39.3 |
HIP 76281 |
20.59 |
| 2026-06-11 12:00 |
15:33:10.18 |
-45:26:16.3 |
HIP 76281 |
21.74 |
| 2026-06-12 00:00 |
15:33:03.72 |
-45:25:53.0 |
HIP 76281 |
22.89 |
| 2026-06-12 12:00 |
15:32:57.29 |
-45:25:29.6 |
HIP 75957 |
22.61 |
| 2026-06-13 00:00 |
15:32:50.89 |
-45:25:06.0 |
HIP 75957 |
21.49 |
| 2026-06-13 12:00 |
15:32:44.52 |
-45:24:42.1 |
HIP 75957 |
20.38 |
| 2026-06-14 00:00 |
15:32:38.18 |
-45:24:18.1 |
HIP 75957 |
19.29 |
| 2026-06-14 12:00 |
15:32:31.87 |
-45:23:53.8 |
HIP 75957 |
18.22 |
| 2026-06-15 00:00 |
15:32:25.59 |
-45:23:29.3 |
HIP 75957 |
17.17 |
| 2026-06-15 12:00 |
15:32:19.35 |
-45:23:04.7 |
HIP 75957 |
16.13 |
| 2026-06-16 00:00 |
15:32:13.13 |
-45:22:39.8 |
HIP 75957 |
15.13 |
| 2026-06-16 12:00 |
15:32:06.95 |
-45:22:14.8 |
HIP 75957 |
14.15 |
| 2026-06-17 00:00 |
15:32:00.80 |
-45:21:49.6 |
HIP 75957 |
13.21 |
| 2026-06-17 12:00 |
15:31:54.69 |
-45:21:24.1 |
HIP 75957 |
12.32 |
| 2026-06-18 00:00 |
15:31:48.61 |
-45:20:58.5 |
HIP 75957 |
11.48 |
| 2026-06-18 12:00 |
15:31:42.56 |
-45:20:32.8 |
HIP 75957 |
10.70 |
| 2026-06-19 00:00 |
15:31:36.55 |
-45:20:06.8 |
HIP 75957 |
10.00 |
| 2026-06-19 12:00 |
15:31:30.58 |
-45:19:40.7 |
HIP 75957 |
9.39 |
| 2026-06-20 00:00 |
15:31:24.64 |
-45:19:14.4 |
HIP 75957 |
8.90 |
| 2026-06-20 12:00 |
15:31:18.74 |
-45:18:47.9 |
HIP 75957 |
8.53 |
| 2026-06-21 00:00 |
15:31:12.87 |
-45:18:21.3 |
HIP 75957 |
8.30 |
| 2026-06-21 12:00 |
15:31:07.05 |
-45:17:54.5 |
HIP 75957 |
8.23 |
| 2026-06-22 00:00 |
15:31:01.26 |
-45:17:27.6 |
HIP 75957 |
8.31 |