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2927 Alamosa (1981 TM)
Classification: Main-belt Asteroid          SPK-ID: 2002927
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1699426406423082 3.4453e-08  
a 2.53215200688711 9.0966e-09 au
q 2.101831408328995 8.9039e-08 au
i 17.02677256727597 3.5393e-06 deg
node 150.4622537814516 1.2149e-05 deg
peri 189.3032280585865 1.6e-05 deg
M 357.6294678016861 1.1713e-05 deg
tp 2459406.191175187923
(2021-Jul-10.69117519)
4.7896e-05 TDB
period 1471.746753802247
4.03
7.9308e-06
2.171e-08
d
yr
n .2446073001825502 1.3181e-09 deg/d
Q 2.962472605445226 1.0643e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2993  
   data-arc span      31025 days (84.94 yr)  
   first obs. used      1936-07-16  
   last obs. used      2021-06-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37846  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 22:05:22  

Additional Information
 Earth MOID = 1.09301 au 
 Jupiter MOID = 2.43352 au 
 T_jup = 3.370 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456999.5 (2014-Dec-08.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .168031978522158 3.4207e-08  
q 2.107944091273843 8.8071e-08 au
tp 2456461.616909169063
(2013-Jun-18.11690917)
4.7859e-05 TDB
node 150.4962750989606 1.2156e-05 deg
peri 189.1406486721546 1.611e-05 deg
i 17.01439828928127 3.5344e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2993  
   data-arc span      31025 days (84.94 yr)  
   first obs. used      1936-07-16  
   last obs. used      2021-06-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37846  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 22:05:22  

Additional Information
 Jupiter MOID = 2.43352 au 
 T_jup = 3.370 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.170102859199332E-15 -3.002091114476063E-15 6.013964553467535E-13 7.106349531791585E-15 1.358057054072417E-13 2.730500757721114E-15
q -3.002091114476063E-15 7.756547132006472E-15 -1.557771494659916E-12 -1.926315616685421E-14 -3.468886426577083E-13 -6.883031297169046E-15
tp 6.013964553467535E-13 -1.557771494659916E-12 2.290509047628428E-9 2.728811917618104E-12 5.204895890195276E-10 5.131384103174719E-12
node 7.106349531791585E-15 -1.926315616685421E-14 2.728811917618104E-12 1.477603870752404E-10 -1.406040568295407E-10 1.211507812728739E-11
peri 1.358057054072417E-13 -3.468886426577083E-13 5.204895890195276E-10 -1.406040568295407E-10 2.595254121682639E-10 -1.046661453497792E-11
i 2.730500757721114E-15 -6.883031297169046E-15 5.131384103174719E-12 1.211507812728739E-11 -1.046661453497792E-11 1.249211084570755E-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 12.14   n/a E2021B10  
rotation period rot_per 4.3832 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Odden, C.; French, J.; Briggs, J. (2012) Minor Planet Bull. 39, 236-238.]

2927 Alamosa (1981 TM)          Discovered 1981-Oct-05 by Thomas, N. G. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 TM = 1936 OA = 1975 EN2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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