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101869 (1999 MM)
Classification: Apollo [NEO, PHA]          SPK-ID: 2101869
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 58 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6106696475814508 6.4997e-08  
a 1.624265909071098 4.8153e-09 au
q .6323760188000859 1.0401e-07 au
i 4.765103735362939 1.5201e-05 deg
node 110.9554835296363 4.8998e-05 deg
peri 268.7849381320456 4.8487e-05 deg
M 10.90646087468778 2.026e-05 deg
tp 2458977.593145058395
(2020-May-08.09314506)
4.2463e-05 TDB
period 756.1085006151192
2.07
3.3623e-06
9.205e-09
d
yr
n .4761221434584166 2.1173e-09 deg/d
Q 2.616155799342111 7.7559e-09 au
  Orbit Determination Parameters
   # obs. used (total)      201  
   data-arc span      3167 days (8.67 yr)  
   first obs. used      1999-06-12  
   last obs. used      2008-02-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62978  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Apr-16 06:28:43  

Additional Information
 Earth MOID = .0014296 au 
 Jupiter MOID = 2.8538 au 
 T_jup = 4.085 
[ hide covariance matrix ]
Orbital Elements at Epoch 2452843.5 (2003-Jul-23.0) TDB
Reference: JPL 58 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6105512943449921 6.595e-08  
q .6323256938688545 1.0366e-07 au
tp 2452929.671515179252
(2003-Oct-17.17151518)
1.4689e-05 TDB
node 111.2561742676106 4.8924e-05 deg
peri 268.4332400468935 4.8405e-05 deg
i 4.764574160937856 1.521e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      201  
   data-arc span      3167 days (8.67 yr)  
   first obs. used      1999-06-12  
   last obs. used      2008-02-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62978  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Apr-16 06:28:43  

Additional Information
 Jupiter MOID = 2.8538 au 
 T_jup = 4.085 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.349458247490278E-15 -6.834184966905399E-15 9.418935485990998E-14 -3.707086058931148E-13 1.554740222629931E-13 -7.571796173585437E-14
q -6.834184966905399E-15 1.074536514496476E-14 -1.195817875224217E-13 5.896481510575523E-13 -2.397632962369412E-13 1.191392448762061E-13
tp 9.418935485990998E-14 -1.195817875224217E-13 2.157621100571889E-10 5.312688306388334E-11 6.55116863353523E-11 3.413862628777084E-12
node -3.707086058931148E-13 5.896481510575523E-13 5.312688306388334E-11 2.393548184245457E-9 -2.31014549186283E-9 -7.084401506168271E-11
peri 1.554740222629931E-13 -2.397632962369412E-13 6.55116863353523E-11 -2.31014549186283E-9 2.34307652072272E-9 8.027109951828654E-11
i -7.571796173585437E-14 1.191392448762061E-13 3.413862628777084E-12 -7.084401506168271E-11 8.027109951828654E-11 2.313463524139742E-10

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 19.2   n/a MPO445809  

101869 (1999 MM)          Discovered 1999-Jun-20 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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