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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1342299018961632 2.8141e-08  
a 2.631678251333961 9.0304e-09 au
q 2.278428337835137 7.7027e-08 au
i 12.38795839382478 4.1285e-07 deg
node 228.8192170202614 2.0862e-06 deg
peri 202.7580346849022 7.7941e-06 deg
M 327.4377714418963 7.4574e-06 deg
tp 2459341.545499614659
(2021-May-07.04549961)
3.2397e-05 TDB
period 1559.36439579596
4.27
8.0262e-06
2.197e-08
d
yr
n .2308632933845088 1.1883e-09 deg/d
Q 2.984928164832785 1.0242e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2314  
   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      .41439  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:55:10  

Additional Information
 Earth MOID = 1.29635 au 
 Jupiter MOID = 2.35097 au 
 T_jup = 3.354 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457364.5 (2015-Dec-08.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1346684344329856 2.7964e-08  
q 2.278006167370751 7.6518e-08 au
tp 2457775.098779844148
(2017-Jan-21.59877984)
3.2069e-05 TDB
node 228.9006712341506 2.0793e-06 deg
peri 201.4216428147528 7.7989e-06 deg
i 12.40044688525081 4.1251e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2314  
   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      .41439  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:55:10  

Additional Information
 Jupiter MOID = 2.35097 au 
 T_jup = 3.354 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.819966192527042E-16 -2.12986813049562E-15 -5.951417869555835E-14 -4.244957647560533E-15 4.291602924440157E-14 -4.131954863692557E-15
q -2.12986813049562E-15 5.855028063689054E-15 1.32566914305544E-13 1.18820959869178E-14 -1.267174379916089E-13 1.125072624262901E-14
tp -5.951417869555835E-14 1.32566914305544E-13 1.028398224502264E-9 -3.583141309443655E-11 2.317225116908895E-10 -3.467659981600485E-12
node -4.244957647560533E-15 1.18820959869178E-14 -3.583141309443655E-11 4.323454486414177E-12 -1.188414378631828E-11 4.462561067445536E-14
peri 4.291602924440157E-14 -1.267174379916089E-13 2.317225116908895E-10 -1.188414378631828E-11 6.082295898654604E-11 -7.909298076194478E-13
i -4.131954863692557E-15 1.125072624262901E-14 -3.467659981600485E-12 4.462561067445536E-14 -7.909298076194478E-13 1.701654204238487E-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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