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21848 (1999 TO116)
Classification: Main-belt Asteroid          SPK-ID: 2021848
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1862396970654162 4.0905e-08  
a 2.780121685526791 1.2226e-08 au
q 2.262352665009287 1.1233e-07 au
i 13.10317437685853 4.1245e-06 deg
node 191.0619261781674 1.6436e-05 deg
peri 202.9760398147259 1.8885e-05 deg
M 230.4000366204472 1.102e-05 deg
tp 2460006.032003123637
(2023-Mar-02.53200312)
5.4024e-05 TDB
period 1693.144931545015
4.64
1.1169e-05
3.058e-08
d
yr
n .2126220817207276 1.4025e-09 deg/d
Q 3.297890706044295 1.4503e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1232  
   data-arc span      24608 days (67.37 yr)  
   first obs. used      1954-01-31  
   last obs. used      2021-06-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51833  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 05:11:43  

Additional Information
 Earth MOID = 1.27251 au 
 Jupiter MOID = 2.16749 au 
 T_jup = 3.271 
[ 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 14.36   n/a MPO614063  
diameter diameter 3.914 km 0.723 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 10.035 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 0.264   0.090 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21848 (1999 TO116)          Discovered 1999-Oct-04 by LINEAR at Socorro
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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