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58876 (1998 HT121)
Classification: Main-belt Asteroid          SPK-ID: 2058876
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09159876504200638 3.8226e-08  
a 3.014501025758278 1.6911e-08 au
q 2.738376454580958 1.2084e-07 au
i 10.50464286356544 3.9653e-06 deg
node 145.6274958575048 1.7499e-05 deg
peri 173.5161985552177 3.0654e-05 deg
M 350.6542316671154 2.2348e-05 deg
tp 2459050.128836237748
(2020-Jul-19.62883624)
0.00011852 TDB
period 1911.708102449262
5.23
1.6086e-05
4.404e-08
d
yr
n .1883132678774398 1.5846e-09 deg/d
Q 3.290625596935598 1.846e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1069  
   data-arc span      10480 days (28.69 yr)  
   first obs. used      1992-02-29  
   last obs. used      2020-11-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54116  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:57:22  

Additional Information
 Earth MOID = 1.72579 au 
 Jupiter MOID = 2.02786 au 
 T_jup = 3.217 
[ 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 14.6   n/a MPO436193  
diameter diameter 4.509 km 0.196 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.166   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58876 (1998 HT121)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2138-Mar-11 23:06 00:01 Hygie 0.0278883418836172 0.027855097856711 0.0279215866475751 4.31426955711317 4.31426923598939 2502018.462301981 1.30745414970069 1670.74242809845 55.7518700343365 7.79437473872203 10426.3847937767 T 23 CATAB v2.0f-lin.ifort 2020-Dec-18 03:57:24 2020-Dec-18 03:57

Alternate Designations
 1998 HT121 = 1992 DJ11 = 2000 WC102 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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