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91401 (1999 MY)
Classification: Main-belt Asteroid          SPK-ID: 2091401
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1501541754654528 4.7651e-08  
a 2.761761171432017 1.8798e-08 au
q 2.34707119990314 1.3142e-07 au
i 1.428365092218778 5.6922e-06 deg
node 326.0561104718288 0.00018439 deg
peri 348.5462350632709 0.00018512 deg
M 183.8999490595031 1.8769e-05 deg
tp 2459820.539150055913
(2022-Aug-29.03915006)
9.0954e-05 TDB
period 1676.399821825603
4.59
1.7115e-05
4.686e-08
d
yr
n .2147459068612637 2.1925e-09 deg/d
Q 3.176451142960895 2.162e-08 au
  Orbit Determination Parameters
   # obs. used (total)      419  
   data-arc span      8874 days (24.30 yr)  
   first obs. used      1995-10-17  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59072  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:29:15  

Additional Information
 Earth MOID = 1.33327 au 
 Jupiter MOID = 2.09788 au 
 T_jup = 3.324 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456750.5 (2014-Apr-03.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1522057799934327 4.796e-08  
q 2.339388166063876 1.3257e-07 au
tp 2456462.741360903047
(2013-Jun-19.24136090)
7.8948e-05 TDB
node 326.2325125301565 0.00018327 deg
peri 347.368365083088 0.00018399 deg
i 1.435704638118333 5.6992e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      419  
   data-arc span      8874 days (24.30 yr)  
   first obs. used      1995-10-17  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59072  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:29:15  

Additional Information
 Jupiter MOID = 2.09788 au 
 T_jup = 3.324 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.300208976622844E-15 -6.312782952956985E-15 9.479585682154215E-13 1.137710297534792E-14 1.990994667943076E-13 1.031341241688078E-16
q -6.312782952956985E-15 1.757352618558383E-14 -2.480412321302216E-12 -3.285089968865383E-14 -5.13592266872227E-13 -2.050730524392492E-16
tp 9.479585682154215E-13 -2.480412321302216E-12 6.232741291913504E-9 1.390161400851335E-12 1.301842960030473E-9 2.550585807410387E-13
node 1.137710297534792E-14 -3.285089968865383E-14 1.390161400851335E-12 3.358842617350062E-8 -3.357695376925307E-8 1.67843643933951E-10
peri 1.990994667943076E-13 -5.13592266872227E-13 1.301842960030473E-9 -3.357695376925307E-8 3.385111119447433E-8 -1.67742277409942E-10
i 1.031341241688078E-16 -2.050730524392492E-16 2.550585807410387E-13 1.67843643933951E-10 -1.67742277409942E-10 3.248087166316213E-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 15.9   n/a MPO417450  

91401 (1999 MY)          Discovered 1999-Jun-22 by Zoltowski, F. B. at Woomera
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 MY = 2000 WY91 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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