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7806 Umasslowell (1971 UM)
Classification: Main-belt Asteroid          SPK-ID: 2007806
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1929032885238351 3.3987e-08  
a 2.424436296460651 5.0632e-09 au
q 1.956754562056844 8.2648e-08 au
i 2.658117127286898 3.7243e-06 deg
node 29.59757680430279 5.9279e-05 deg
peri 334.5372900500376 5.9702e-05 deg
M 25.24477282358827 6.4231e-06 deg
tp 2459103.809555036668
(2020-Sep-11.30955504)		 2.4577e-05 TDB
period 1378.842282719022
3.78		 4.3193e-06
1.183e-08		 d
yr
n .2610885991181634 8.1788e-10 deg/d
Q 2.892118030864458 6.0399e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2248  
   data-arc span      24962 days (68.34 yr)  
   first obs. used      1952-09-15  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48903  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:39:30  

Additional Information
 Earth MOID = .953537 au 
 Jupiter MOID = 2.56617 au 
 T_jup = 3.484 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456980.5 (2014-Nov-19.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1939303904725038 3.3947e-08  
q 1.954162994073858 8.2657e-08 au
tp 2456347.451683235671
(2013-Feb-23.95168324)		 2.5414e-05 TDB
node 29.66378926132558 5.9198e-05 deg
peri 334.7646327743286 5.9615e-05 deg
i 2.660743618722203 3.7265e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      2248  
   data-arc span      24962 days (68.34 yr)  
   first obs. used      1952-09-15  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48903  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:39:30  

Additional Information
 Jupiter MOID = 2.56617 au 
 T_jup = 3.484 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.152410481483382E-15 -2.802488462654393E-15 5.873229387680268E-14 -3.248445547968388E-15 1.235876570693256E-14 -6.832467142008686E-16
q -2.802488462654393E-15 6.832161826793407E-15 -1.744791370723269E-13 7.539677298918151E-15 -3.60410860242426E-14 1.683732668487586E-15
tp 5.873229387680268E-14 -1.744791370723269E-13 6.458758217139948E-10 -5.569481118634245E-13 1.841027859372186E-10 -1.090771278121264E-13
node -3.248445547968388E-15 7.539677298918151E-15 -5.569481118634245E-13 3.504376303618998E-9 -3.500352879722372E-9 -5.333054894371693E-11
peri 1.235876570693256E-14 -3.60410860242426E-14 1.841027859372186E-10 -3.500352879722372E-9 3.553976828461406E-9 5.325558109688724E-11
i -6.832467142008686E-16 1.683732668487586E-15 -1.090771278121264E-13 -5.333054894371693E-11 5.325558109688724E-11 1.388643770074802E-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 14.47   n/a E2021B10  
diameter diameter 3.913 km 0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.241   0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

7806 Umasslowell           Discovered 1971 Oct. 26 by L. Kohoutek at Bergedorf.
The University of Massachusetts at Lowell is an educational and research institution with roots dating back to the 1890s. UMass Lowell faculty and students conduct pioneering work in such fields as nanotechnology, advanced polymers, life sciences and radar imaging. The name was suggested by E. Aguirre and I. Joson.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080819/MPCPages.arcLast Updated: 2008-08-25

Alternate Designations
 1971 UM = 1990 VB3 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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