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48887 (1998 KM4)
Classification: Main-belt Asteroid          SPK-ID: 2048887
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1296370054257644 3.2993e-08  
a 2.27425581312616 8.0407e-09 au
q 1.979428099940348 7.3395e-08 au
i 5.169873498453311 3.377e-06 deg
node 93.57215585755405 4.7506e-05 deg
peri 143.8484383614257 5.0505e-05 deg
M 152.7973780421342 1.7e-05 deg
tp 2458468.794933978233
(2018-Dec-16.29493398)
5.883e-05 TDB
period 1252.729766835746
3.43
6.6436e-06
1.819e-08
d
yr
n .2873724322120319 1.524e-09 deg/d
Q 2.569083526311972 9.0831e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1031  
   data-arc span      10763 days (29.47 yr)  
   first obs. used      1991-05-06  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56099  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:35:19  

Additional Information
 Earth MOID = .969848 au 
 Jupiter MOID = 2.43463 au 
 T_jup = 3.594 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO337648  

48887 (1998 KM4)          Discovered 1998-May-22 by LONEOS at Anderson Mesa
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1965-Sep-08 17:36 00:05 Psych 0.0292590674136559 0.0292555627848068 0.0292625721118168 2.79644205393011 2.79644190605779 2439012.233383151 4.62658871170206 188.655271606224 30.1819694385055 -22.710435599804 59827.8683933819 T 25 CATAB v2.0f-lin.ifort 2020-Nov-12 23:35:23 2020-Nov-12 23:35
2195-Jun-14 07:31 00:21 Psych 0.0496517471195087 0.0496399782143247 0.0496635168647703 2.79226592594691 2.79226583867753 2522931.813342530 21.0684702450911 668.370747248183 23.3158576166173 28.7955385155939 153473.977055925 T 25 CATAB v2.0f-lin.ifort 2020-Nov-12 23:35:23 2020-Nov-12 23:35
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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