Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.143786E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T23:17:55+0800
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    1 Object 1

    AOE ID 31663
    NORAD ID 31663
    Object Type DEBRIS
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 59881
    NORAD ID 59881
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter FENGYUN 1C DEB PREFIRE-2
    Time of Closest Approach 2026-09-07T00:48:55+0000
    Collision Probability (Pc) 1.143786E-6
    Conjunction Distance (km) 2.858 km
    Relative Speed (km/s) 10.098 km/s
    Conjunction Risk Parameters R (Radial): 1.87 | I (In-track): -1.629 | C (Cross-track): -1.418
    Collision Risk Index (CRI) 0.36
    X Position (km) 600.603 602.241
    Position Y (km) 1154.254 1152.749
    Position Z (km) 6756.416 6754.623
    Velocity X (km/s) 7.56 2.064
    Velocity Y (km/s) 1.003 -7.244
    Velocity Z (km/s) -0.882 1.053

    Orbital Parameters 国际轨道数据源

    Parameter FENGYUN 1C DEB PREFIRE-2
    Semimajor Axis (a) 7014.836 km 6879.391 km
    Eccentricity (e) 0.018802 0.001042
    Inclination (i) 98.8414° 97.3995°
    RAAN 184.7788° 101.9416°
    Perigee Argument 123.5041° 293.6428°
    Mean Anomaly (M) 238.4290° 66.3714°
    Apogee 768.590 km 508.419 km
    Perigee 504.808 km 494.089 km
    Orbit Epoch 2026-09-03T13:30:15+0000 2026-09-04T01:25:46+0000

    FENGYUN 1C DEB & PREFIRE-2 Collision Probability (Pc) Trend

    FENGYUN 1C DEB & PREFIRE-2 Collision Probability (Pc) TrendNot Available

    FENGYUN 1C DEB & PREFIRE-2 Miss Distance (Miss Distance) Trend

    FENGYUN 1C DEB & PREFIRE-2 Miss Distance (Miss Distance) TrendNot Available

    FENGYUN 1C DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    PREFIRE-2Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    FENGYUN 1C DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    PREFIRE-2Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with FENGYUN 1C DEB

    No nearby objects data