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25D/Neujmin 2
Classification: Jupiter-family Comet          SPK-ID: 1000064
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2424960.5 (1927-Mar-21.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 0.566818596285863 4.9007e-07  
a 3.08916688391109 1.5343e-07 au
q 1.33816964707983 1.5173e-06 au
i 10.6387130963875 8.6051e-05 deg
node 328.7169509657245 0.00024532 deg
peri 193.7040335562024 0.00081816 deg
M 11.57706623123575 0.00017593 deg
tp 2424896.724114143077
(1927-Jan-16.22411414)
0.00096599 TDB
period 1983.172459232064
5.43
0.00014775
4.045e-07
d
yr
n .1815273292668664 1.3524e-08 deg/d
Q 4.840164120742355 2.404e-07 au
  Orbit Determination Parameters
   # obs. used (total)      55  
   data-arc span      3994 days (10.93 yr)  
   first obs. used      1916-03-05  
   last obs. used      1927-02-10  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      1  
   norm. resid. RMS      1.2726  
   source      ORB  
   producer      M.S.W. Keesey  
   solution date      2003-Apr-18 14:24:13  

Additional Information
 Earth MOID = .35044 au 
 T_jup = 2.932 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 12.5   n/a ICQ 1992 Handbook  
comet total magnitude slope K1 15.0   n/a ICQ 1992 Handbook  
comet nuclear magnitude M2 16.   n/a ICQ 1992 Handbook  
comet nuclear magnitude slope K2 10.0   n/a ICQ 1992 Handbook  

25D/Neujmin 2          Discovered 1916-Feb-24 by Neujmin, G. N. at Simeis, Crimea
discovered on plate/photo taken on discovery date
Reference: comet.disLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1927.0   25D/1926 V2   1927 I   1926g 
 1916.2   25D/1916 D1   1916 II   1916a 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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