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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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1296370403976877 3.3029e-08  
a 2.274255812489306 8.0514e-09 au
q 1.979428019850954 7.3463e-08 au
i 5.169870108784701 3.3796e-06 deg
node 93.57214213204125 4.7603e-05 deg
peri 143.8484635120597 5.0625e-05 deg
M 152.797364776417 1.7059e-05 deg
tp 2458468.794980363679
(2018-Dec-16.29498036)
5.9048e-05 TDB
period 1252.729766309548
3.43
6.6525e-06
1.821e-08
d
yr
n .2873724323327402 1.5261e-09 deg/d
Q 2.569083605127658 9.0952e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1018  
   data-arc span      10401 days (28.48 yr)  
   first obs. used      1991-05-06  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55907  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:39:11  

Additional Information
 Earth MOID = .969848 au 
 Jupiter MOID = 2.43463 au 
 T_jup = 3.594 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456871.5 (2014-Aug-02.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1294648410664881 3.3089e-08  
q 1.980758261486324 7.3625e-08 au
tp 2457215.593506315368
(2015-Jul-12.09350632)
5.8996e-05 TDB
node 93.59984814349465 4.7599e-05 deg
peri 143.7645435609374 5.0623e-05 deg
i 5.169605855868491 3.3791e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1018  
   data-arc span      10401 days (28.48 yr)  
   first obs. used      1991-05-06  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55907  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:39:11  

Additional Information
 Jupiter MOID = 2.43463 au 
 T_jup = 3.594 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.094914502917236E-15 -2.425891972388364E-15 -5.458782216418158E-13 -1.72184982145524E-14 -1.53294207108107E-13 -2.180734580722035E-15
q -2.425891972388364E-15 5.420655310219233E-15 1.232571474252497E-12 3.950172379248053E-14 3.425319525218026E-13 4.895115367481009E-15
tp -5.458782216418158E-13 1.232571474252497E-12 3.480580755476188E-9 5.029330806768105E-11 1.036354899049293E-9 2.477146577258032E-12
node -1.72184982145524E-14 3.950172379248053E-14 5.029330806768105E-11 2.265639478576142E-9 -2.240676138541452E-9 6.594120246800175E-12
peri -1.53294207108107E-13 3.425319525218026E-13 1.036354899049293E-9 -2.240676138541452E-9 2.562644168606053E-9 -5.807272288439928E-12
i -2.180734580722035E-15 4.895115367481009E-15 2.477146577258032E-12 6.594120246800175E-12 -5.807272288439928E-12 1.14182952927751E-11

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

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