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48931 (1998 PM1)
Classification: Main-belt Asteroid          SPK-ID: 2048931
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2550785497382826 4.8391e-08  
a 2.360498233048287 6.9972e-09 au
q 1.758385767102551 1.138e-07 au
i 5.298987141550048 4.9449e-06 deg
node .8265070905938885 3.4537e-05 deg
peri 337.1126821556295 3.5313e-05 deg
M 348.4008221024244 7.7574e-06 deg
tp 2459043.180417094061
(2020-Jul-12.68041709)
2.8557e-05 TDB
period 1324.658548178091
3.63
5.89e-06
1.613e-08
d
yr
n .2717681477201328 1.2084e-09 deg/d
Q 2.962610698994023 8.782e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1165  
   data-arc span      8134 days (22.27 yr)  
   first obs. used      1998-08-10  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48238  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 21:27:09  

Additional Information
 Earth MOID = .751027 au 
 Jupiter MOID = 2.43659 au 
 T_jup = 3.501 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457205.5 (2015-Jul-02.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2547783556648313 4.8278e-08  
q 1.759214645224496 1.135e-07 au
tp 2457719.705554371895
(2016-Nov-27.20555437)
2.8907e-05 TDB
node .8723558091422727 3.4526e-05 deg
peri 337.2476124390464 3.5304e-05 deg
i 5.299812892813036 4.9453e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1165  
   data-arc span      8134 days (22.27 yr)  
   first obs. used      1998-08-10  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48238  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 21:27:09  

Additional Information
 Jupiter MOID = 2.43659 au 
 T_jup = 3.501 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.330811008146116E-15 -5.473701989075029E-15 7.716801215186022E-13 2.525101638020987E-15 1.346382164615658E-13 -1.228280268746771E-15
q -5.473701989075029E-15 1.288158134527126E-14 -1.845389161793496E-12 -6.310685061285019E-15 -3.267787535969588E-13 3.013112317388453E-15
tp 7.716801215186022E-13 -1.845389161793496E-12 8.356361797436782E-10 -1.037065951767536E-13 2.154806697335851E-10 -1.784151015534019E-12
node 2.525101638020987E-15 -6.310685061285019E-15 -1.037065951767536E-13 1.192046400749802E-9 -1.18648834828387E-9 1.922429588413039E-11
peri 1.346382164615658E-13 -3.267787535969588E-13 2.154806697335851E-10 -1.18648834828387E-9 1.2463638567062E-9 -1.96143459528457E-11
i -1.228280268746771E-15 3.013112317388453E-15 -1.784151015534019E-12 1.922429588413039E-11 -1.96143459528457E-11 2.445576486022171E-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 15.3   n/a MPO280003  

48931 (1998 PM1)          Discovered 1998-Aug-10 by Broughton, J. at Reedy Creek
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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