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22797 (1999 NO18)
Classification: Main-belt Asteroid          SPK-ID: 2022797
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2036831658012718 3.5495e-08  
a 2.397569660339923 7.5076e-09 au
q 1.909225081692808 8.4169e-08 au
i 3.171251154099404 3.0391e-06 deg
node 48.48120295871504 6.72e-05 deg
peri 290.8340180843637 6.7545e-05 deg
M 245.4364625038732 7.4405e-06 deg
tp 2459632.018274811411
(2022-Feb-21.51827481)
2.8966e-05 TDB
period 1355.986226746534
3.71
6.3691e-06
1.744e-08
d
yr
n .2654894223105502 1.247e-09 deg/d
Q 2.885914238987039 9.0367e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1868  
   data-arc span      10090 days (27.62 yr)  
   first obs. used      1992-10-25  
   last obs. used      2020-06-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49537  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:13:11  

Additional Information
 Earth MOID = .901505 au 
 Jupiter MOID = 2.51071 au 
 T_jup = 3.497 
[ 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 14.55   n/a E2021B10  
diameter diameter 3.234 km 0.677 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 2.996 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.298   0.129 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

22797 (1999 NO18)          Discovered 1999-Jul-14 by LINEAR at Socorro
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 NO18 = 1998 GG12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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