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19977 (1989 TQ)
Classification: Main-belt Asteroid          SPK-ID: 2019977
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2141753430499476 1.6646e-08  
a 2.22226289600259 5.538e-09 au
q 1.746308977904065 3.7402e-08 au
i 5.556181890667816 1.4787e-06 deg
node 242.0759938303897 7.2213e-06 deg
peri 61.60981422386693 9.1347e-06 deg
M 253.0965318429415 5.5401e-06 deg
tp 2459755.819571911692
(2022-Jun-25.31957191)
1.9367e-05 TDB
period 1210.017299889333
3.31
4.5231e-06
1.238e-08
d
yr
n .2975164074372533 1.1121e-09 deg/d
Q 2.698216814101115 6.7241e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2391  
   data-arc span      11565 days (31.66 yr)  
   first obs. used      1989-10-07  
   last obs. used      2021-06-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48729  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:17:55  

Additional Information
 Earth MOID = .738965 au 
 Jupiter MOID = 2.5476 au 
 T_jup = 3.612 
[ 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 14.10   n/a MPCxxxxx  
diameter diameter 4.302 km 0.125 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 10.4306 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.199   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19977 (1989 TQ)          Discovered 1989-Oct-07 by Mizuno, Y., Furuta, T. at Kani
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1989 TQ = 1992 NE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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