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190413 (1999 TN284)
Classification: Main-belt Asteroid          SPK-ID: 2190413
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2403998560819065 7.9066e-08  
a 2.801875253439439 2.6574e-08 au
q 2.128304845753142 2.1302e-07 au
i 8.799317647644488 6.4408e-06 deg
node 172.5095633544741 3.0997e-05 deg
peri 195.9787898903948 3.2427e-05 deg
M 200.0850560761007 1.451e-05 deg
tp 2459961.453588564839
(2023-Jan-16.95358856)
7.7719e-05 TDB
period 1713.05623578061
4.69
2.4371e-05
6.672e-08
d
yr
n .2101507192120604 2.9897e-09 deg/d
Q 3.475445661125735 3.2963e-08 au
  Orbit Determination Parameters
   # obs. used (total)      413  
   data-arc span      7523 days (20.60 yr)  
   first obs. used      1999-09-13  
   last obs. used      2020-04-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52276  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:07:34  

Additional Information
 Earth MOID = 1.12706 au 
 Jupiter MOID = 1.98836 au 
 T_jup = 3.265 
[ 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 15.74   n/a E2021B55  
diameter diameter 4.230 km 1.304 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 36.795 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.057   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

190413 (1999 TN284)          Discovered 1999-Oct-09 by LINEAR at Socorro
Reference: 20080917/Numbers.arcLast Updated: 2008-09-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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