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30977 (1995 JJ1)
Classification: Main-belt Asteroid          SPK-ID: 2030977
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1486836077852373 3.1144e-08  
a 2.437204802359576 8.3175e-09 au
q 2.074832399433248 7.6831e-08 au
i 3.377411320313851 3.0852e-06 deg
node 117.6692275582419 6.044e-05 deg
peri 114.4168664748275 6.1356e-05 deg
M 309.2078868946492 1.226e-05 deg
tp 2459592.578621526683
(2022-Jan-13.07862153)
4.7778e-05 TDB
period 1389.749302282321
3.80
7.1142e-06
1.948e-08
d
yr
n .2590395256243616 1.326e-09 deg/d
Q 2.799577205285904 9.5542e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1896  
   data-arc span      9535 days (26.11 yr)  
   first obs. used      1995-04-27  
   last obs. used      2021-06-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49241  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 06:48:13  

Additional Information
 Earth MOID = 1.06709 au 
 Jupiter MOID = 2.1929 au 
 T_jup = 3.486 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457114.5 (2015-Apr-02.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1489138717837029 3.1118e-08  
q 2.074203113796893 7.6774e-08 au
tp 2456814.166131685405
(2014-Jun-05.66613169)
4.3242e-05 TDB
node 117.7031506866308 6.0459e-05 deg
peri 114.5617390202139 6.1376e-05 deg
i 3.376967557952457 3.0849e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1896  
   data-arc span      9535 days (26.11 yr)  
   first obs. used      1995-04-27  
   last obs. used      2021-06-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49241  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 06:48:13  

Additional Information
 Jupiter MOID = 2.1929 au 
 T_jup = 3.486 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.683257851576303E-16 -2.379065475404433E-15 -2.721012576230784E-13 -7.221898443644755E-15 -5.48014039347864E-14 -2.884753217599802E-16
q -2.379065475404433E-15 5.894304976440711E-15 7.153648979933347E-13 1.815506627570758E-14 1.468782988014226E-13 7.365672026234155E-16
tp -2.721012576230784E-13 7.153648979933347E-13 1.869884595230992E-9 7.771002701583965E-12 4.719501028474828E-10 -5.187435228204595E-14
node -7.221898443644755E-15 1.815506627570758E-14 7.771002701583965E-12 3.65533571196288E-9 -3.64675166822697E-9 7.001794277124717E-12
peri -5.48014039347864E-14 1.468782988014226E-13 4.719501028474828E-10 -3.64675166822697E-9 3.767007307171091E-9 -7.009133015574553E-12
i -2.884753217599802E-16 7.365672026234155E-16 -5.187435228204595E-14 7.001794277124717E-12 -7.009133015574553E-12 9.516425226243726E-12

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 MPCxxxxx  
diameter diameter 3.373 km 0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.356   0.079 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

30977 (1995 JJ1)          Discovered 1995-May-05 by Elst, E. W. at Caussols
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1995 JJ1 = 1995 HT = 1999 LH26 = 2000 SV120 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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