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14874 (1990 US4)
Classification: Main-belt Asteroid          SPK-ID: 2014874
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 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1962259854300303 1.5031e-08  
a 2.330565639470986 6.7526e-09 au
q 1.873248100256423 3.4422e-08 au
i 7.067152654870037 1.3878e-06 deg
node 76.39996706521144 5.3062e-06 deg
peri 218.8585592641116 8.6803e-06 deg
M 248.5040009519861 5.9118e-06 deg
tp 2459602.982700425032
(2022-Jan-23.48270043)
2.2174e-05 TDB
period 1299.542345825481
3.56
5.648e-06
1.546e-08
d
yr
n .2770205997183761 1.204e-09 deg/d
Q 2.787883178685549 8.0777e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2960  
   data-arc span      11108 days (30.41 yr)  
   first obs. used      1990-10-16  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43399  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:41:13  

Additional Information
 Earth MOID = .8613 au 
 Jupiter MOID = 2.41358 au 
 T_jup = 3.535 
[ 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 13.79   n/a E2021B10  
diameter diameter 4.373 km 0.180 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.31 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Ditteon, R.; Johnson, D.; Lin, W.; Wang, Z.; Zhao, B. (2019) Minor Planet Bull. 46, 280-282.]
[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.]
geometric albedo albedo 0.335   0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

14874 (1990 US4)          Discovered 1990-Oct-16 by Elst, E. W. at La Silla
Reference: 20000523/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 US4 = 1993 LM1 = 1999 CZ84 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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