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187823 (1999 UK16)
Classification: Main-belt Asteroid          SPK-ID: 2187823
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2051092227419323 4.8281e-08  
a 2.173323094122604 6.6441e-09 au
q 1.727554483520025 1.061e-07 au
i 5.058842805679214 5.039e-06 deg
node 29.99216815442356 4.8736e-05 deg
peri 311.5477473405146 4.9574e-05 deg
M 251.2234404686189 8.7877e-06 deg
tp 2459554.104421619762
(2021-Dec-05.60442162)
2.9027e-05 TDB
period 1170.266759047385
3.20
5.3665e-06
1.469e-08
d
yr
n .3076221700879939 1.4107e-09 deg/d
Q 2.619091704725182 8.0069e-09 au
  Orbit Determination Parameters
   # obs. used (total)      758  
   data-arc span      13313 days (36.45 yr)  
   first obs. used      1983-11-09  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52436  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 04:59:55  

Additional Information
 Earth MOID = .723045 au 
 Jupiter MOID = 2.7881 au 
 T_jup = 3.654 
[ 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 16.86   n/a E2021B55  
rotation period rot_per 5.14773 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:
[McNeill, A.; Mommert, M.; Trilling, D.E.; Llama, J.; Skiff, B. (2019) Ap. J. Suppl. Series 245, id.29.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

187823 (1999 UK16)          Discovered 1999-Oct-29 by CSS at Catalina
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

Alternate Designations
 1999 UK16 = 1983 VM5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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