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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1341700469608298 3.5257e-08  
a 2.312997084925924 6.7374e-09 au
q 2.00266215742115 8.1021e-08 au
i 5.954642222674254 3.6211e-06 deg
node 341.9543075264889 3.2873e-05 deg
peri 158.1794107378279 3.4817e-05 deg
M 183.124201820386 1.1535e-05 deg
tp 2459831.787175714639
(2022-Sep-09.28717571)
4.1749e-05 TDB
period 1284.875520541756
3.52
5.614e-06
1.537e-08
d
yr
n .2801827836584583 1.2242e-09 deg/d
Q 2.623332012430697 7.6414e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1705  
   data-arc span      15856 days (43.41 yr)  
   first obs. used      1977-02-19  
   last obs. used      2020-07-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45708  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:13:58  

Additional Information
 Earth MOID = 1.01665 au 
 Jupiter MOID = 2.39042 au 
 T_jup = 3.564 
[ 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

[ show close-approach data ]
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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