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) |
| 2026-09-20 00:00 |
15:27:19.69 |
-44:00:39.9 |
HIP 75613 |
7.03 |
| 2026-09-20 12:00 |
15:27:23.14 |
-44:00:28.7 |
HIP 75613 |
7.55 |
| 2026-09-21 00:00 |
15:27:26.64 |
-44:00:17.8 |
HIP 75613 |
8.09 |
| 2026-09-21 12:00 |
15:27:30.18 |
-44:00:07.1 |
HIP 75613 |
8.65 |
| 2026-09-22 00:00 |
15:27:33.76 |
-43:59:56.7 |
HIP 75613 |
9.22 |
| 2026-09-22 12:00 |
15:27:37.39 |
-43:59:46.5 |
HIP 75745 |
9.09 |
| 2026-09-23 00:00 |
15:27:41.06 |
-43:59:36.6 |
HIP 75745 |
8.43 |
| 2026-09-23 12:00 |
15:27:44.77 |
-43:59:26.9 |
HIP 75745 |
7.77 |
| 2026-09-24 00:00 |
15:27:48.52 |
-43:59:17.5 |
HIP 75745 |
7.10 |
| 2026-09-24 12:00 |
15:27:52.31 |
-43:59:08.4 |
HIP 75745 |
6.43 |
| 2026-09-25 00:00 |
15:27:56.14 |
-43:58:59.5 |
HIP 75745 |
5.76 |
| 2026-09-25 12:00 |
15:28:00.01 |
-43:58:50.9 |
HIP 75745 |
5.09 |
| 2026-09-26 00:00 |
15:28:03.92 |
-43:58:42.6 |
HIP 75745 |
4.43 |
| 2026-09-26 12:00 |
15:28:07.88 |
-43:58:34.5 |
HIP 75745 |
3.78 |
| 2026-09-27 00:00 |
15:28:11.87 |
-43:58:26.6 |
HIP 75745 |
3.15 |
| 2026-09-27 12:00 |
15:28:15.90 |
-43:58:19.1 |
HIP 75745 |
2.56 |
| 2026-09-28 00:00 |
15:28:19.97 |
-43:58:11.8 |
HIP 75745 |
2.07 |
| 2026-09-28 12:00 |
15:28:24.08 |
-43:58:04.7 |
HIP 75745 |
1.75 |
| 2026-09-29 00:00 |
15:28:28.23 |
-43:57:58.0 |
HIP 75745 |
1.73 |
| 2026-09-29 12:00 |
15:28:32.41 |
-43:57:51.5 |
HIP 75745 |
2.00 |
| 2026-09-30 00:00 |
15:28:36.64 |
-43:57:45.2 |
HIP 75745 |
2.49 |
| 2026-09-30 12:00 |
15:28:40.90 |
-43:57:39.2 |
HIP 75745 |
3.10 |
| 2026-10-01 00:00 |
15:28:45.20 |
-43:57:33.5 |
HIP 75745 |
3.77 |
| 2026-10-01 12:00 |
15:28:49.53 |
-43:57:28.1 |
HIP 75745 |
4.48 |
| 2026-10-02 00:00 |
15:28:53.91 |
-43:57:22.9 |
HIP 75745 |
5.21 |
| 2026-10-02 12:00 |
15:28:58.32 |
-43:57:18.0 |
HIP 75745 |
5.97 |
| 2026-10-03 00:00 |
15:29:02.76 |
-43:57:13.4 |
HIP 75745 |
6.73 |
| 2026-10-03 12:00 |
15:29:07.24 |
-43:57:09.0 |
HIP 75745 |
7.51 |
| 2026-10-04 00:00 |
15:29:11.76 |
-43:57:04.9 |
HIP 75745 |
8.31 |
| 2026-10-04 12:00 |
15:29:16.32 |
-43:57:01.0 |
HIP 75745 |
9.11 |
| 2026-10-05 00:00 |
15:29:20.90 |
-43:56:57.5 |
HIP 75745 |
9.91 |
| 2026-10-05 12:00 |
15:29:25.53 |
-43:56:54.2 |
HIP 75745 |
10.73 |
| 2026-10-06 00:00 |
15:29:30.19 |
-43:56:51.2 |
HIP 75745 |
11.55 |
| 2026-10-06 12:00 |
15:29:34.88 |
-43:56:48.4 |
HIP 75745 |
12.38 |
| 2026-10-07 00:00 |
15:29:39.60 |
-43:56:45.9 |
HIP 75745 |
13.22 |
| 2026-10-07 12:00 |
15:29:44.36 |
-43:56:43.7 |
HIP 75967 |
13.08 |
| 2026-10-08 00:00 |
15:29:49.16 |
-43:56:41.8 |
HIP 75967 |
12.27 |
| 2026-10-08 12:00 |
15:29:53.98 |
-43:56:40.1 |
HIP 75967 |
11.47 |
| 2026-10-09 00:00 |
15:29:58.84 |
-43:56:38.7 |
HIP 75967 |
10.66 |
| 2026-10-09 12:00 |
15:30:03.73 |
-43:56:37.6 |
HIP 75967 |
9.87 |
| 2026-10-10 00:00 |
15:30:08.66 |
-43:56:36.8 |
HIP 75967 |
9.10 |
| 2026-10-10 12:00 |
15:30:13.61 |
-43:56:36.2 |
HIP 75967 |
8.34 |
| 2026-10-11 00:00 |
15:30:18.59 |
-43:56:35.9 |
HIP 75967 |
7.61 |