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4877 Humboldt (5066 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2004877
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1343834879950365 2.8138e-08  
a 2.63212760552673 9.0127e-09 au
q 2.278413117048025 7.7024e-08 au
i 12.38708718148811 4.1278e-07 deg
node 228.8182078138133 2.0862e-06 deg
peri 202.7627170555843 7.7881e-06 deg
M 12.68164751872665 7.4826e-06 deg
tp 2459341.554514629902
(2021-May-07.05451463)
3.2379e-05 TDB
period 1559.763800722761
4.27
8.0112e-06
2.193e-08
d
yr
n .2308041767818844 1.1855e-09 deg/d
Q 2.985842094005436 1.0224e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2315  
   data-arc span      25408 days (69.56 yr)  
   first obs. used      1951-08-26  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41637  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 14:33:19  

Additional Information
 Earth MOID = 1.29664 au 
 Jupiter MOID = 2.35092 au 
 T_jup = 3.354 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457365.5 (2015-Dec-09.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1346678499695986 2.7964e-08  
q 2.278008081500603 7.6518e-08 au
tp 2457775.098932806405
(2017-Jan-21.59893281)
3.2068e-05 TDB
node 228.9006232075887 2.0793e-06 deg
peri 201.421638098759 7.7988e-06 deg
i 12.40044721082328 4.1251e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2315  
   data-arc span      25408 days (69.56 yr)  
   first obs. used      1951-08-26  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41637  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 14:33:19  

Additional Information
 Jupiter MOID = 2.35092 au 
 T_jup = 3.354 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.819861672465042E-16 -2.129845284847005E-15 -5.953055543390972E-14 -4.2443643020632E-15 4.291227763131357E-14 -4.131745530417834E-15
q -2.129845284847005E-15 5.854978561805243E-15 1.326042238157673E-13 1.188073916191576E-14 -1.267089704965973E-13 1.125024819327955E-14
tp -5.953055543390972E-14 1.326042238157673E-13 1.028378086076644E-9 -3.583062328307284E-11 2.317178381368094E-10 -3.467326075064835E-12
node -4.2443643020632E-15 1.188073916191576E-14 -3.583062328307284E-11 4.323421340601156E-12 -1.188395696117519E-11 4.461295590800328E-14
peri 4.291227763131357E-14 -1.267089704965973E-13 2.317178381368094E-10 -1.188395696117519E-11 6.082188016378721E-11 -7.90851421844483E-13
i -4.131745530417834E-15 1.125024819327955E-14 -3.467326075064835E-12 4.461295590800328E-14 -7.90851421844483E-13 1.701611023335177E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.06   n/a E2021B10  
diameter diameter 6.828 km 0.217 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.491213 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.290   0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4877 Humboldt (5066 T-2)          Discovered 1973-Sep-25 by van Houten and Gehrels at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 5066 T-2 = 1982 YF2 = 1986 TU15 = 1986 UF1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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