Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    8.028223E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-05T14:11:51+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    Name NOAA 21
    AOE ID 54234
    NORAD ID 54234
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 54456
    NORAD ID 54456
    Object Type DEBRIS
    Country
    CN CN

    Conjunction Constraints

    Parameter NOAA 21 CZ-6A DEB
    Time of Closest Approach 2026-10-05T16:08:56+0000
    Collision Probability (Pc) 8.028223E-6
    Conjunction Distance (km) 1.402 km
    Relative Speed (km/s) 13.861 km/s
    Conjunction Risk Parameters R (Radial): 1.215 | I (In-track): 0.237 | C (Cross-track): 0.659
    Collision Risk Index (CRI) 0.53
    X Position (km) 2980.92 2980.229
    Position Y (km) 909.39 909.91
    Position Z (km) -6503.512 -6502.409
    Velocity X (km/s) -5.239 6.765
    Velocity Y (km/s) -4.321 -0.73
    Velocity Z (km/s) -3.007 2.92

    Orbital Parameters 国际轨道数据源

    Parameter NOAA 21 CZ-6A DEB
    Semimajor Axis (a) 7205.007 km 7160.795 km
    Eccentricity (e) 0.000082 0.011290
    Inclination (i) 98.7130° 98.9748°
    RAAN 214.5415° 356.5071°
    Perigee Argument 215.0525° 175.2869°
    Mean Anomaly (M) 145.0597° 184.9405°
    Apogee 827.463 km 863.507 km
    Perigee 826.277 km 701.809 km
    Orbit Epoch 2026-10-04T13:37:13+0000 2026-10-04T11:58:06+0000

    NOAA 21 & CZ-6A DEB Collision Probability (Pc) Trend

    NOAA 21 & CZ-6A DEB Collision Probability (Pc) TrendNot Available

    NOAA 21 & CZ-6A DEB Miss Distance (Miss Distance) Trend

    NOAA 21 & CZ-6A DEB Miss Distance (Miss Distance) TrendNot Available

    NOAA 21Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    CZ-6A DEBMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    NOAA 21Collision Probability Trend

    Object 1 Probability TrendNot Available

    CZ-6A DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with NOAA 21

    No nearby objects data