Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    2.399308E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-12T06:59:15+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    AOE ID 7714
    NORAD ID 7714
    Object Type PAYLOAD
    Country
    CIS CIS
    VS

    2 Object 2

    AOE ID 39630
    NORAD ID 39630
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter METEOR 1-21 DMSP 5D-3 F19 (USA 249)
    Time of Closest Approach 2026-09-13T22:00:46+0000
    Collision Probability (Pc) 2.399308E-6
    Conjunction Distance (km) 2.054 km
    Relative Speed (km/s) 12.436 km/s
    Conjunction Risk Parameters R (Radial): -2.021 | I (In-track): -0.19 | C (Cross-track): 0.303
    Collision Risk Index (CRI) 0.43
    X Position (km) -1246.737 -1246.752
    Position Y (km) -435.441 -435.454
    Position Z (km) 7092.891 7094.944
    Velocity X (km/s) 5.832 1.742
    Velocity Y (km/s) -4.563 7.181
    Velocity Z (km/s) 0.736 0.752

    Orbital Parameters 国际轨道数据源

    Parameter METEOR 1-21 DMSP 5D-3 F19 (USA 249)
    Semimajor Axis (a) 7242.755 km 7220.445 km
    Eccentricity (e) 0.003008 0.000976
    Inclination (i) 81.1895° 98.7881°
    RAAN 145.5655° 253.1494°
    Perigee Argument 111.2639° 328.6522°
    Mean Anomaly (M) 249.1747° 31.4068°
    Apogee 886.401 km 849.358 km
    Perigee 842.835 km 835.258 km
    Orbit Epoch 2026-09-11T03:07:25+0000 2026-09-11T13:36:50+0000

    METEOR 1-21 & DMSP 5D-3 F19 (USA 249) Collision Probability (Pc) Trend

    METEOR 1-21 & DMSP 5D-3 F19 (USA 249) Collision Probability (Pc) TrendNot Available

    METEOR 1-21 & DMSP 5D-3 F19 (USA 249) Miss Distance (Miss Distance) Trend

    METEOR 1-21 & DMSP 5D-3 F19 (USA 249) Miss Distance (Miss Distance) TrendNot Available

    METEOR 1-21Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    DMSP 5D-3 F19 (USA 249)Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    METEOR 1-21Collision Probability Trend

    Object 1 Probability TrendNot Available

    DMSP 5D-3 F19 (USA 249)Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with METEOR 1-21

    No nearby objects data