Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    5.847602E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-21T13:46:56+0800
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    1 Object 1

    AOE ID 33798
    NORAD ID 33798
    Object Type DEBRIS
    Country
    CIS CIS
    ← VS →

    2 Object 2

    AOE ID 61561
    NORAD ID 61561
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter COSMOS 2251 DEB QIANFAN-28
    Time of Closest Approach 2026-10-21T06:28:08+0000
    Collision Probability (Pc) 5.847602E-6
    Conjunction Distance (km) 1.527 km
    Relative Speed (km/s) 13.189 km/s
    Conjunction Risk Parameters R (Radial): -0.54 | I (In-track): -0.662 | C (Cross-track): -1.265
    Collision Risk Index (CRI) 0.5
    X Position (km) 1820.341 1821.499
    Position Y (km) 1704.078 1703.384
    Position Z (km) 6719.45 6718.737
    Velocity X (km/s) -0.899 -5.357
    Velocity Y (km/s) 7.211 -4.493
    Velocity Z (km/s) -1.54 2.591

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 2251 DEB QIANFAN-28
    Semimajor Axis (a) 7120.561 km 7174.801 km
    Eccentricity (e) 0.009203 0.000646
    Inclination (i) 74.0276° 88.9910°
    RAAN 275.5949° 40.4016°
    Perigee Argument 319.6119° 359.8830°
    Mean Anomaly (M) 52.5920° 0.2362°
    Apogee 807.956 km 801.302 km
    Perigee 676.892 km 792.026 km
    Orbit Epoch 2026-10-20T05:07:41+0000 2026-10-20T21:44:19+0000

    COSMOS 2251 DEB & QIANFAN-28 Collision Probability (Pc) Trend

    COSMOS 2251 DEB & QIANFAN-28 Collision Probability (Pc) TrendNot Available

    COSMOS 2251 DEB & QIANFAN-28 Miss Distance (Miss Distance) Trend

    COSMOS 2251 DEB & QIANFAN-28 Miss Distance (Miss Distance) TrendNot Available

    COSMOS 2251 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    QIANFAN-28Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 2251 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    QIANFAN-28Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 2251 DEB

    No nearby objects data