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JPL Small-Body Database Browser
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20446 (1999 JB80)
Classification: Mars-crossing Asteroid          SPK-ID: 2020446
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3371042860299628 4.5493e-08  
a 2.301586547170086 7.3507e-09 au
q 1.525711857450146 1.0367e-07 au
i 22.56188485164947 4.7403e-06 deg
node 81.19773074942299 1.0556e-05 deg
peri 277.4802460573674 1.3201e-05 deg
M 181.640599791695 9.5957e-06 deg
tp 2459232.377505468873
(2021-Jan-17.87750547)
3.5271e-05 TDB
period 1275.379384002897
3.49
6.1099e-06
1.673e-08
d
yr
n .282268950333905 1.3522e-09 deg/d
Q 3.077461236890025 9.8286e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1402  
   data-arc span      23489 days (64.31 yr)  
   first obs. used      1955-01-15  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49242  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:52:23  

Additional Information
 Earth MOID = .698822 au 
 Jupiter MOID = 2.79497 au 
 T_jup = 3.417 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.9   n/a MPO384929  
rotation period rot_per 3.199 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Skiff, B.A. (2011) Posting on CALL web site. http://www.minorplanet.info/call.html]

20446 (1999 JB80)          Discovered 1999-May-14 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 JB80 = 1989 WN 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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