Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
C/1991 Y1 (Zanotta-Brewington)
Classification: Hyperbolic Comet          SPK-ID: 1000558
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2448631.5 (1992-Jan-10.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000056697563823 8.5168e-06  
a -11357.97278110887 1706.1 au
q .6439693866566208 9.1062e-07 au
i 50.02822548115083 0.00023147 deg
node 254.9082576555254 0.00047438 deg
peri 197.8725244864647 0.00029635 deg
M -1.790632637037373E-5 4.0347e-06 deg
tp 2448653.491439467493
(1992-Jan-31.99143947)
0.00010048 TDB
period n/a
n/a
n/a
n/a
d
yr
n 8.142407593119248E-7 1.8347e-07 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      266  
   data-arc span      130 days  
   first obs. used      1991-12-24  
   last obs. used      1992-05-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .66613  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:29:41  

Additional Information
 Earth MOID = .319982 au 
 Jupiter MOID = 1.67036 au 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 10.2   0.8 5 2 parameter fit from 15 observations, autocmod 2.9c
comet total magnitude slope K1 14.75   n/a 5 autocmod 2.9c
comet nuclear magnitude M2 17.0   0.2 5 from 4 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 5 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 5 autocmod 2.9c
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-22 18:45 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin