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18603 (1998 BM25)
Classification: Main-belt Asteroid          SPK-ID: 2018603
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1346730360488334 3.528e-08  
a 2.311722827150638 6.6541e-09 au
q 2.000396095514869 8.1106e-08 au
i 5.956327472181496 3.6174e-06 deg
node 341.9528984023733 3.2802e-05 deg
peri 158.3441984782053 3.4723e-05 deg
M 237.8828717396894 1.1466e-05 deg
tp 2459831.987958560072
(2022-Sep-09.48795856)
4.1315e-05 TDB
period 1283.813886840146
3.51
5.543e-06
1.518e-08
d
yr
n .2804144772775973 1.2107e-09 deg/d
Q 2.623049558786406 7.5502e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1721  
   data-arc span      15856 days (43.41 yr)  
   first obs. used      1977-02-19  
   last obs. used      2020-07-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45507  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:33:01  

Additional Information
 Earth MOID = 1.01514 au 
 Jupiter MOID = 2.38998 au 
 T_jup = 3.565 
[ 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 14.91   n/a E2021B10  

18603 (1998 BM25)          Discovered 1998-Jan-28 by Kobayashi, T. at Oizumi
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1998 BM25 = 1977 DF10 = 1984 EP1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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