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JPL Small-Body Database Browser
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58841 (1998 HT54)
Classification: Main-belt Asteroid          SPK-ID: 2058841
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1264361182850509 5.3463e-08  
a 2.561543659694689 1.1959e-08 au
q 2.23767202254521 1.4077e-07 au
i 13.01658308007644 6.5444e-06 deg
node 13.26258222427045 1.931e-05 deg
peri 104.5939750190185 3.7421e-05 deg
M 216.3755010369455 2.7803e-05 deg
tp 2459597.916339539377
(2022-Jan-18.41633954)
0.00011458 TDB
period 1497.445657161174
4.10
1.0487e-05
2.871e-08
d
yr
n .2404093920059045 1.6836e-09 deg/d
Q 2.885415296844169 1.3471e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1599  
   data-arc span      23291 days (63.77 yr)  
   first obs. used      1955-10-24  
   last obs. used      2019-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47974  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 12:38:00  

Additional Information
 Earth MOID = 1.2933 au 
 Jupiter MOID = 2.24129 au 
 T_jup = 3.388 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456354.5 (2013-Mar-03.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1263584853418472 5.2464e-08  
q 2.238112215402555 1.379e-07 au
tp 2456599.549421201855
(2013-Nov-03.04942120)
0.00012166 TDB
node 13.47821378724761 1.9293e-05 deg
peri 103.890952959956 3.7748e-05 deg
i 13.02767375183121 6.5434e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1599  
   data-arc span      23291 days (63.77 yr)  
   first obs. used      1955-10-24  
   last obs. used      2019-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47974  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 12:38:00  

Additional Information
 Jupiter MOID = 2.24129 au 
 T_jup = 3.388 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.752468008100353E-15 -7.217346893722569E-15 4.313107796008442E-12 -3.964826964179224E-15 1.160328878300642E-12 -2.404669268212135E-14
q -7.217346893722569E-15 1.901734973542393E-14 -1.149272940359931E-11 1.147627180913432E-14 -3.095570884355772E-12 6.339346896487812E-14
tp 4.313107796008442E-12 -1.149272940359931E-11 1.480197855416663E-8 -5.924374934372822E-12 3.962991061607043E-9 -5.138113727581168E-11
node -3.964826964179224E-15 1.147627180913432E-14 -5.924374934372822E-12 3.722291883319612E-10 -3.636238562267598E-10 -4.986985891336394E-11
peri 1.160328878300642E-12 -3.095570884355772E-12 3.962991061607043E-9 -3.636238562267598E-10 1.42492803807558E-9 3.492076839382876E-11
i -2.404669268212135E-14 6.339346896487812E-14 -5.138113727581168E-11 -4.986985891336394E-11 3.492076839382876E-11 4.281638414460232E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.6   n/a MPO436193  
diameter diameter 5.121 km 0.133 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.203   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58841 (1998 HT54)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 HT54 = 2000 QL151 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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